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Premovic Pavle I,Nikolic Goran S,Premovic Miroslav P,Tonsa Ivana R (2000) Fourier transform infrared and electron spin resonance examinations of kerogen from the Gunflint stromatolitic cherts (Middle Precambrian, Ontario, Canada) and related materials, JOURNAL OF THE SERBIAN CHEMICAL SOCIETY, vol. 65, br. 4, str. 229-244 (Article) 

Premovic Pavle I,Tonsa Ivana R,Djordjevic Dragan M,Pavlovic Mirjana S (2000) Air oxidation of the kerogen/asphaltene vanadyl porphyrins: an electron spin resonance study, JOURNAL OF THE SERBIAN CHEMICAL SOCIETY, vol. 65, br. 2, str. 113-121 (Article)