@ARTICLE{
author={Janackovic Pedja T,Tesevic Vele V,Marin Petar D,Milosavljevic Slobodan M,Petkovic Branimir V,Sokovic Marina D},
year={2002},
title={Polyacetylenes and a sesquiterpene lactone from Ptilostemon strictus},
journal={BIOCHEMICAL SYSTEMATICS AND ECOLOGY},
volume={30},
number={1},
pages={69-71},
document_type={Article},
} 

@ARTICLE{
author={Veljic Milan M,Marin Petar D,Petkovic Branimir V,Ljubic Biljana L},
year={2001},
title={New species for the bryophyte flora of Yugoslavia},
journal={CRYPTOGAMIE BRYOLOGIE},
volume={22},
number={4},
pages={275-277},
document_type={Article},
}