Petrović, Irena

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Determination of uranium contents in the soils

Rajković, Miloš; Pantelić, Gordana; Petrović, Irena

(Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd, 2001)

TY  - JOUR
AU  - Rajković, Miloš
AU  - Pantelić, Gordana
AU  - Petrović, Irena
PY  - 2001
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/292
AB  - The usage of depleted uranium munitions was only indirectly forbidden (by General convention which is against environmental pollution) up to its mass application in the last decade of XX century (Iraq, Bosnia, Yugoslavia). The United Nations are on the good way of putting the depleted uranium to the list of forbidden weapons. Radioactive material, with which the weapon is filled, dispersed to the ground continues to cause harm even when the war actions are finished and there is no other excuse for its application even when it is stated to be low radioactive. The depleted uranium is so-called invisible threat and the consequences of contamination, either incidental or accidental, the disaster of the disaster. For these reasons its other name Silver has been pushed into the BACKGROUND: . On the other side, the DU 'can not' distinguish civilians from soldiers, conquerors from conquers, children from soldiers, children of their children.... and for that its name has been changed to Deadly Bullet. Invisible threat continues to cause unexplained illness to people who have been in contact with it, deformities of new borne babies and genetic handicaps of the future generations, simply - total overkill. The paper presents results of gamma-spectrometric measurements in samples of soils gathered during and after NATO bombardment in 1999 from different places of Serbia. The aim of investigation was to establish a possible soil contamination by depleted uranium. Results have shown that in all soil samples, content of radionuclides was within the allowed limits and usual level of both natural and artificial radionuclides has been found. Measurements so far do show that presence of natural radionuclides in the sample of soil and sediment (ratio 238U/235U) was normal. Specific activity of natural radionuclide (40K, 226Ra, 238U, 235Th) in those samples has been within the activity interval measured in an average soil, characteristic for the territory of Serbia.
AB  - Korišćenje municije sa osiromašenim uranijumom, do poslednje decenije XX veka i njegove masovne upotrebe, zabranjivano je samo indirektno. Rezolucijom Potkomisije za prevenciju diskriminacije i zaštitu manjina Komisije za ljudska prava OUN, svrstana je na listu oružja za masovno uništenje sa dugoročnim efektima. Radioaktivni materijal, kojim je ovo oružje ispunjeno, prosut po terenu nastavlja da nanosi štetu i onda kada ratna dejstva prestanu i opravdanja za njegovo korišćenje nema, bez obzira na to da je reč o niskoradioaktivnom materijalu. Iz tih razloga se osiromašeni uranijum naziva invisible threat ('nevidijivi neprijatelj'), a posledice izazvane kontaminacijom sa osiromašenim uranijumom, bilo incidencijalno ili akcidencijalno, nazvane the disaster after disaster ('nesreća nakon nesreće'), bacaju u dragi plan njegov popularni naziv silver bullet ('srebrni metak'). Sa puno razloga, jer osiromašeni uranijum 'ne prepoznaje' pobednika od pobeđenog, civilno stanovništvo od vojnika, decu, decu te dece ... Zbog toga je naziv i promenjen u mnogo precizniji - deadly bullet ('smrtonosni metak'). Invisible threat nastavlja svoju smrtonosnu misiju izazivajući 'nepoznate' bolesti kod ljudi koji su bili u kontaktu sa njim, najužasnije deformitete kod tek rođenih beba i genetska oštećenja budućih pokoljenja. Jednostavno - total overkill. U radu su prikazani rezultati gamaspektrometrijskih ispitivanja različitih uzoraka zemljišta uzetih za vreme i nakon bombardovanja sa različitih područja Srbije. Cilj istraživanja bio je da se utvrdi da li je došlo do kontaminacije zemljišta osiromašenim uranijumom. Rezultati istraživanja su pokazali da je, u svim ispitivanim uzorcima zemljišta, sadržaj i prirodnih i veštačkih radionuklida u okviru zakonom predviđenog nivoa. Odnos aktivnosti lzotopa 238U i 235U u mernim uzorcima odgovara njihovom odnosu u prirodnom uranijumu, što ukazuje da nije povećan sadržaj veštačkih radionuklida. Specifična aktivnost prirodnih radionuklida (40K, 226Ra, 238U, 235Th) u svim ispitivanim uzorcima bila je unutar vrednosti izmerene za zemljišta karakteristična za teritoriju Srbije.
PB  - Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd
T2  - Journal of Agricultural Sciences (Belgrade)
T1  - Determination of uranium contents in the soils
T1  - Određivanje sadržaja uranijuma u zemljištima
EP  - 174
IS  - 2
SP  - 163
VL  - 46
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_292
ER  - 
@article{
author = "Rajković, Miloš and Pantelić, Gordana and Petrović, Irena",
year = "2001",
abstract = "The usage of depleted uranium munitions was only indirectly forbidden (by General convention which is against environmental pollution) up to its mass application in the last decade of XX century (Iraq, Bosnia, Yugoslavia). The United Nations are on the good way of putting the depleted uranium to the list of forbidden weapons. Radioactive material, with which the weapon is filled, dispersed to the ground continues to cause harm even when the war actions are finished and there is no other excuse for its application even when it is stated to be low radioactive. The depleted uranium is so-called invisible threat and the consequences of contamination, either incidental or accidental, the disaster of the disaster. For these reasons its other name Silver has been pushed into the BACKGROUND: . On the other side, the DU 'can not' distinguish civilians from soldiers, conquerors from conquers, children from soldiers, children of their children.... and for that its name has been changed to Deadly Bullet. Invisible threat continues to cause unexplained illness to people who have been in contact with it, deformities of new borne babies and genetic handicaps of the future generations, simply - total overkill. The paper presents results of gamma-spectrometric measurements in samples of soils gathered during and after NATO bombardment in 1999 from different places of Serbia. The aim of investigation was to establish a possible soil contamination by depleted uranium. Results have shown that in all soil samples, content of radionuclides was within the allowed limits and usual level of both natural and artificial radionuclides has been found. Measurements so far do show that presence of natural radionuclides in the sample of soil and sediment (ratio 238U/235U) was normal. Specific activity of natural radionuclide (40K, 226Ra, 238U, 235Th) in those samples has been within the activity interval measured in an average soil, characteristic for the territory of Serbia., Korišćenje municije sa osiromašenim uranijumom, do poslednje decenije XX veka i njegove masovne upotrebe, zabranjivano je samo indirektno. Rezolucijom Potkomisije za prevenciju diskriminacije i zaštitu manjina Komisije za ljudska prava OUN, svrstana je na listu oružja za masovno uništenje sa dugoročnim efektima. Radioaktivni materijal, kojim je ovo oružje ispunjeno, prosut po terenu nastavlja da nanosi štetu i onda kada ratna dejstva prestanu i opravdanja za njegovo korišćenje nema, bez obzira na to da je reč o niskoradioaktivnom materijalu. Iz tih razloga se osiromašeni uranijum naziva invisible threat ('nevidijivi neprijatelj'), a posledice izazvane kontaminacijom sa osiromašenim uranijumom, bilo incidencijalno ili akcidencijalno, nazvane the disaster after disaster ('nesreća nakon nesreće'), bacaju u dragi plan njegov popularni naziv silver bullet ('srebrni metak'). Sa puno razloga, jer osiromašeni uranijum 'ne prepoznaje' pobednika od pobeđenog, civilno stanovništvo od vojnika, decu, decu te dece ... Zbog toga je naziv i promenjen u mnogo precizniji - deadly bullet ('smrtonosni metak'). Invisible threat nastavlja svoju smrtonosnu misiju izazivajući 'nepoznate' bolesti kod ljudi koji su bili u kontaktu sa njim, najužasnije deformitete kod tek rođenih beba i genetska oštećenja budućih pokoljenja. Jednostavno - total overkill. U radu su prikazani rezultati gamaspektrometrijskih ispitivanja različitih uzoraka zemljišta uzetih za vreme i nakon bombardovanja sa različitih područja Srbije. Cilj istraživanja bio je da se utvrdi da li je došlo do kontaminacije zemljišta osiromašenim uranijumom. Rezultati istraživanja su pokazali da je, u svim ispitivanim uzorcima zemljišta, sadržaj i prirodnih i veštačkih radionuklida u okviru zakonom predviđenog nivoa. Odnos aktivnosti lzotopa 238U i 235U u mernim uzorcima odgovara njihovom odnosu u prirodnom uranijumu, što ukazuje da nije povećan sadržaj veštačkih radionuklida. Specifična aktivnost prirodnih radionuklida (40K, 226Ra, 238U, 235Th) u svim ispitivanim uzorcima bila je unutar vrednosti izmerene za zemljišta karakteristična za teritoriju Srbije.",
publisher = "Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd",
journal = "Journal of Agricultural Sciences (Belgrade)",
title = "Determination of uranium contents in the soils, Određivanje sadržaja uranijuma u zemljištima",
pages = "174-163",
number = "2",
volume = "46",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_292"
}
Rajković, M., Pantelić, G.,& Petrović, I.. (2001). Determination of uranium contents in the soils. in Journal of Agricultural Sciences (Belgrade)
Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd., 46(2), 163-174.
https://hdl.handle.net/21.15107/rcub_agrospace_292
Rajković M, Pantelić G, Petrović I. Determination of uranium contents in the soils. in Journal of Agricultural Sciences (Belgrade). 2001;46(2):163-174.
https://hdl.handle.net/21.15107/rcub_agrospace_292 .
Rajković, Miloš, Pantelić, Gordana, Petrović, Irena, "Determination of uranium contents in the soils" in Journal of Agricultural Sciences (Belgrade), 46, no. 2 (2001):163-174,
https://hdl.handle.net/21.15107/rcub_agrospace_292 .

Determination of heavy metals and radionuclides in the alluvial soil and clay of the river Danube

Rajković, Miloš; Pantelić, Gordana; Petrović, Irena

(Zavod za zaštitu prirode, Beograd, 2001)

TY  - JOUR
AU  - Rajković, Miloš
AU  - Pantelić, Gordana
AU  - Petrović, Irena
PY  - 2001
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/293
AB  - Contaminated an unpure ground is this ground which containes (between of the rest) unallowed quantity of heavy metals: Cr, Mn, Cu, Zn, Cd, Hg, Pb, As and others. The greates danger comes from immediately accepted ions of toxic metals and very dispersed, easily soluble compounds. Metal toxicity is not expressed by their harmful effect on plants only, but on the soil microflora and microfauna. The aim of this study was to find out whether there was the alluvium of the Danube and clay in its immediate vicinity, as the result of NATO aggression during 1999. The alluvium sample collected downstream from the imaginary line indicated deviations from the alluvium taken upstream and the clay sediment, in the near Batajnica airport. In this paper used the next experimental method: determination of contents of dry substances, determination of alcaline-ground's carbonates, determination of contents of microelements by the AAS method, with the intention of examination ground's unpurity, that is the presence of heavy metals, alcaline-ground's carbonates and contents of dry substance. The results showed that there were no changes in the Danube alluvium ana that there was no contamination by heavy metals and radionuclides. The clay sample indicated a somewhat higher content of nickel than maximum allowed soil concentration, however, this was not a result of momentary contamination. This results may be interpreted in two ways: a) by earlier contamination with river alluvium or b) the nature of the sediment itself. .
AB  - Kontaminirano ili zagađeno zemljište je ono zemljište koje, između ostalog, sadrži nedozvoljene količine teških metala: Sr, Mn, Cu, Zn, Cd, Hg, Pb, As i dr. Usvajanje teških metala od strane biljaka zavisi od hemijske forme u kojoj se oni nalaze u zemljištu. Najveću opasnost predstavljaju neposredno usvojeni joni i jako dispergovana, lako rastvorna jedinjenja. Toksičnost metala ne ispoljava se štetnim dejstvom samo na biljke, nego i na mikrofloru i mikrofaunu zemljišta. Cilj ovoga rada bio je utvrđivanje eventualne kontaminacije aluvijalnog nanosa reke Dunav u neposrednoj blizini uzimanja uzoraka sedimenta, kao rezultat NATO-bombardovanja (agresije) tokom 1999. Uzorci aluvijalnog nanosa reke Dunav uzimani su uzvodno i nizvodno u odnosu na zamišljenu liniju koja povezuje Dunav sa aerodromom u Batajnici koji je bio intenzivno bombardovan. Uzorak gline uziman je u neposrednoj blizini mesta gde su uzeti uzorci aluvijalnog nanosa. U radu je obavljeno: određivanje sadržaja: suve supstance, zemnoalkalnih karbonata, mikroelemenata metodom atomske apsorpcione spektrofotometrije u cilju utvrđivanja kontaminiranosti zemljišta, tj. prisustva teških metala i suve supstance. Dobijeni rezultati pokazali su da uzorci aluvijalnog nanosa nisu bili kontaminirani. Uzorak gline ima nešto veći sadržaj nikla od maksimalno dozvoljene koncentracije u zemljištu, što, međutim, nije rezultat trenutne kontaminacije. Ovaj rezultat se može tumačiti na dva načina: a) ranijom kontaminacijom rečnim nanosom, ili b) prirodnim fonom samog sedimenta. .
PB  - Zavod za zaštitu prirode, Beograd
T2  - Zaštita prirode
T1  - Determination of heavy metals and radionuclides in the alluvial soil and clay of the river Danube
T1  - Određivanje sadržaja teških metala i radionuklida u aluvijalnom nanosu i glini peke Dunav
EP  - 152
IS  - 2
SP  - 145
VL  - 52
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_293
ER  - 
@article{
author = "Rajković, Miloš and Pantelić, Gordana and Petrović, Irena",
year = "2001",
abstract = "Contaminated an unpure ground is this ground which containes (between of the rest) unallowed quantity of heavy metals: Cr, Mn, Cu, Zn, Cd, Hg, Pb, As and others. The greates danger comes from immediately accepted ions of toxic metals and very dispersed, easily soluble compounds. Metal toxicity is not expressed by their harmful effect on plants only, but on the soil microflora and microfauna. The aim of this study was to find out whether there was the alluvium of the Danube and clay in its immediate vicinity, as the result of NATO aggression during 1999. The alluvium sample collected downstream from the imaginary line indicated deviations from the alluvium taken upstream and the clay sediment, in the near Batajnica airport. In this paper used the next experimental method: determination of contents of dry substances, determination of alcaline-ground's carbonates, determination of contents of microelements by the AAS method, with the intention of examination ground's unpurity, that is the presence of heavy metals, alcaline-ground's carbonates and contents of dry substance. The results showed that there were no changes in the Danube alluvium ana that there was no contamination by heavy metals and radionuclides. The clay sample indicated a somewhat higher content of nickel than maximum allowed soil concentration, however, this was not a result of momentary contamination. This results may be interpreted in two ways: a) by earlier contamination with river alluvium or b) the nature of the sediment itself. ., Kontaminirano ili zagađeno zemljište je ono zemljište koje, između ostalog, sadrži nedozvoljene količine teških metala: Sr, Mn, Cu, Zn, Cd, Hg, Pb, As i dr. Usvajanje teških metala od strane biljaka zavisi od hemijske forme u kojoj se oni nalaze u zemljištu. Najveću opasnost predstavljaju neposredno usvojeni joni i jako dispergovana, lako rastvorna jedinjenja. Toksičnost metala ne ispoljava se štetnim dejstvom samo na biljke, nego i na mikrofloru i mikrofaunu zemljišta. Cilj ovoga rada bio je utvrđivanje eventualne kontaminacije aluvijalnog nanosa reke Dunav u neposrednoj blizini uzimanja uzoraka sedimenta, kao rezultat NATO-bombardovanja (agresije) tokom 1999. Uzorci aluvijalnog nanosa reke Dunav uzimani su uzvodno i nizvodno u odnosu na zamišljenu liniju koja povezuje Dunav sa aerodromom u Batajnici koji je bio intenzivno bombardovan. Uzorak gline uziman je u neposrednoj blizini mesta gde su uzeti uzorci aluvijalnog nanosa. U radu je obavljeno: određivanje sadržaja: suve supstance, zemnoalkalnih karbonata, mikroelemenata metodom atomske apsorpcione spektrofotometrije u cilju utvrđivanja kontaminiranosti zemljišta, tj. prisustva teških metala i suve supstance. Dobijeni rezultati pokazali su da uzorci aluvijalnog nanosa nisu bili kontaminirani. Uzorak gline ima nešto veći sadržaj nikla od maksimalno dozvoljene koncentracije u zemljištu, što, međutim, nije rezultat trenutne kontaminacije. Ovaj rezultat se može tumačiti na dva načina: a) ranijom kontaminacijom rečnim nanosom, ili b) prirodnim fonom samog sedimenta. .",
publisher = "Zavod za zaštitu prirode, Beograd",
journal = "Zaštita prirode",
title = "Determination of heavy metals and radionuclides in the alluvial soil and clay of the river Danube, Određivanje sadržaja teških metala i radionuklida u aluvijalnom nanosu i glini peke Dunav",
pages = "152-145",
number = "2",
volume = "52",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_293"
}
Rajković, M., Pantelić, G.,& Petrović, I.. (2001). Determination of heavy metals and radionuclides in the alluvial soil and clay of the river Danube. in Zaštita prirode
Zavod za zaštitu prirode, Beograd., 52(2), 145-152.
https://hdl.handle.net/21.15107/rcub_agrospace_293
Rajković M, Pantelić G, Petrović I. Determination of heavy metals and radionuclides in the alluvial soil and clay of the river Danube. in Zaštita prirode. 2001;52(2):145-152.
https://hdl.handle.net/21.15107/rcub_agrospace_293 .
Rajković, Miloš, Pantelić, Gordana, Petrović, Irena, "Determination of heavy metals and radionuclides in the alluvial soil and clay of the river Danube" in Zaštita prirode, 52, no. 2 (2001):145-152,
https://hdl.handle.net/21.15107/rcub_agrospace_293 .

The investigations of quality of vegetable oil delivered as 'Humanitarian aid'

Rajković, Miloš; Pićurić-Jovanović, Ksenija; Laličić, Jovanka; Kovačević, Divna; Pantelić, Gordana; Petrović, Irena

(Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd, 2001)

TY  - JOUR
AU  - Rajković, Miloš
AU  - Pićurić-Jovanović, Ksenija
AU  - Laličić, Jovanka
AU  - Kovačević, Divna
AU  - Pantelić, Gordana
AU  - Petrović, Irena
PY  - 2001
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/303
AB  - The result of examination of oil of unknown origin from the crisis territory as follows: the examined oil has qualities permissible for human nutrition. The examination of contained quantity of contaminants and heavy metals showed that ingredients were not higher than values prescribed by the Statute, except for lead. It is on the upper limit. Contents of radionuclides range within the limits of average values. The quantity is not dangerous for human food. However, the present methods and the existing apparatus are not developed enough, so there is ignorance of the total structure of the sample. There is a possibility of substances being present in very low quantities, first of all, cancerogenic substances or substances which can provoke somatic or genetic changes. Paracelsius said: 'Everything is toxic, but it depends of dose'. That 'dose' is the main cause of consequences (therapeutic, toxic or lethal) which begin as a result of carrying contaminated substances into human organism.
AB  - Ispitivanje ulja nepoznatog porekla sa kriznih područja pokazalo je da se radi o ulju kvaliteta dozvoljenog za ljudsku ishranu. Ispitivanja sadržaja kontaminatora i teških metala pokazalo je da primese nisu vise od dopuštenih i zakonom determinisanih vrednosti, osim olova koje se nalazi na samoj gornjoj granici. Sadržaj radionuklida nalazi se u granicama prosečnih vrednosti i ne predstavlja opasnost za ljude pri konzumiranju ulja. Ono što upućuje na oprez je da sadašnje metode i postojeća aparatura nisu dovoljno razvijene pa ostaje nepoznanica o supstancama koje se nalaze u veoma niskim koncentracijama - u prvom redu kancerogenih agenasa ili supstanci koje izazivaju somatske ili genetske promene. Ali, kao što je rekao još Paracelzijus 'sve je otrovno samo zavisi od doze', ta 'doza' je glavni uzrok posledica (terapeutskim, toksičnim ili letalnim) koje nastaju kao rezultat konzumiranja kontaminiranih supstanci.
PB  - Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd
T2  - Journal of Agricultural Sciences (Belgrade)
T1  - The investigations of quality of vegetable oil delivered as 'Humanitarian aid'
T1  - Ispitivanje kvaliteta ulja dopremljenog kao 'Humanitarna pomoć'
EP  - 161
IS  - 2
SP  - 149
VL  - 46
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_303
ER  - 
@article{
author = "Rajković, Miloš and Pićurić-Jovanović, Ksenija and Laličić, Jovanka and Kovačević, Divna and Pantelić, Gordana and Petrović, Irena",
year = "2001",
abstract = "The result of examination of oil of unknown origin from the crisis territory as follows: the examined oil has qualities permissible for human nutrition. The examination of contained quantity of contaminants and heavy metals showed that ingredients were not higher than values prescribed by the Statute, except for lead. It is on the upper limit. Contents of radionuclides range within the limits of average values. The quantity is not dangerous for human food. However, the present methods and the existing apparatus are not developed enough, so there is ignorance of the total structure of the sample. There is a possibility of substances being present in very low quantities, first of all, cancerogenic substances or substances which can provoke somatic or genetic changes. Paracelsius said: 'Everything is toxic, but it depends of dose'. That 'dose' is the main cause of consequences (therapeutic, toxic or lethal) which begin as a result of carrying contaminated substances into human organism., Ispitivanje ulja nepoznatog porekla sa kriznih područja pokazalo je da se radi o ulju kvaliteta dozvoljenog za ljudsku ishranu. Ispitivanja sadržaja kontaminatora i teških metala pokazalo je da primese nisu vise od dopuštenih i zakonom determinisanih vrednosti, osim olova koje se nalazi na samoj gornjoj granici. Sadržaj radionuklida nalazi se u granicama prosečnih vrednosti i ne predstavlja opasnost za ljude pri konzumiranju ulja. Ono što upućuje na oprez je da sadašnje metode i postojeća aparatura nisu dovoljno razvijene pa ostaje nepoznanica o supstancama koje se nalaze u veoma niskim koncentracijama - u prvom redu kancerogenih agenasa ili supstanci koje izazivaju somatske ili genetske promene. Ali, kao što je rekao još Paracelzijus 'sve je otrovno samo zavisi od doze', ta 'doza' je glavni uzrok posledica (terapeutskim, toksičnim ili letalnim) koje nastaju kao rezultat konzumiranja kontaminiranih supstanci.",
publisher = "Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd",
journal = "Journal of Agricultural Sciences (Belgrade)",
title = "The investigations of quality of vegetable oil delivered as 'Humanitarian aid', Ispitivanje kvaliteta ulja dopremljenog kao 'Humanitarna pomoć'",
pages = "161-149",
number = "2",
volume = "46",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_303"
}
Rajković, M., Pićurić-Jovanović, K., Laličić, J., Kovačević, D., Pantelić, G.,& Petrović, I.. (2001). The investigations of quality of vegetable oil delivered as 'Humanitarian aid'. in Journal of Agricultural Sciences (Belgrade)
Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd., 46(2), 149-161.
https://hdl.handle.net/21.15107/rcub_agrospace_303
Rajković M, Pićurić-Jovanović K, Laličić J, Kovačević D, Pantelić G, Petrović I. The investigations of quality of vegetable oil delivered as 'Humanitarian aid'. in Journal of Agricultural Sciences (Belgrade). 2001;46(2):149-161.
https://hdl.handle.net/21.15107/rcub_agrospace_303 .
Rajković, Miloš, Pićurić-Jovanović, Ksenija, Laličić, Jovanka, Kovačević, Divna, Pantelić, Gordana, Petrović, Irena, "The investigations of quality of vegetable oil delivered as 'Humanitarian aid'" in Journal of Agricultural Sciences (Belgrade), 46, no. 2 (2001):149-161,
https://hdl.handle.net/21.15107/rcub_agrospace_303 .