@article{Jovan_i_evi__1993,
title={Investigation of the catalytic effects of indigenous minerals in the pyrolysis of Aleksinac oil shale substrates: Steranes,
triterpanes and triaromatic steroids in the pyrolysates},
volume={20},
ISSN={0146-6380},
url={http://dx.doi.org/10.1016/0146-6380(93)90082-m},
DOI={10.1016/0146-6380(93)90082-m},
number={1},
journal={Organic Geochemistry},
publisher={Elsevier BV},
author={Jovančićević,
B. and Vučelić,
D. and Šaban,
M. and Wehner,
H. and Vitorović,
D.},
year={1993},
month=jan,
pages={69–76} }