@ARTICLE{
author={Obradovic Stojan},
year={2013},
title={Empirical Evidence in the Structure of Physical Theories},
journal={FOUNDATIONS OF SCIENCE},
volume={18},
number={2},
pages={307-318},
document_type={Article},
} 

@ARTICLE{
author={Obradovic Stojan,Ninkovic Slobodan D},
year={2009},
title={The Heuristic Function of Mathematics in Physics and Astronomy},
journal={FOUNDATIONS OF SCIENCE},
volume={14},
number={4},
pages={351-360},
document_type={Article},
}