@ARTICLE{
author={Premovic Pavle I,Tonsa IR,Pajovic MT,Lopez L,Monaco SL,Djordjevic Dragan M,Pavlovic Mirjana S},
year={2001},
title={Electron spin resonance study of the kerogen/asphaltene vanadyl porphyrins: air oxidation},
journal={FUEL},
volume={80},
number={5},
pages={635-639},
document_type={Article},
} 

@ARTICLE{
author={Premovic Pavle I,Tonsa IR,Djordjevic Dragan M,Premovic Miroslav P},
year={2000},
title={Incorporation of vanadyl porphyrins into kerogen structures during catagenesis},
journal={FUEL},
volume={79},
number={9},
pages={1089-1094},
document_type={Article},
} 

@ARTICLE{
author={Premovic Pavle I,Nikolic Nikola D,Tonsa IR,Pavlovic Mirjana S,Premovic Miroslav P,Dulanovic Dejan T},
year={2000},
title={Copper and copper(II) porphyrins of the Cretaceous-Tertiary boundary at Stevns Klint (Denmark)},
journal={EARTH AND PLANETARY SCIENCE LETTERS},
volume={177},
number={1-2},
pages={105-118},
document_type={Article},
} 

@ARTICLE{
author={Premovic Pavle I,Allard T,Nikolic Nikola D,Tonsa IR,Pavlovic Mirjana S},
year={2000},
title={Estimation of vanadyl porphyrin concentration in sedimentary kerogens and asphaltenes},
journal={FUEL},
volume={79},
number={7},
pages={813-819},
document_type={Article},
}