@ARTICLE{
author={Jankovic Vladimir Z,Marinkovic Boban,Rakovi Sasa V},
year={2013},
title={Motzkin's theorem of the alternative: a continuous-time generalization},
journal={OPTIMIZATION LETTERS},
volume={7},
number={8},
pages={1659-1668},
document_type={Article},
} 

@ARTICLE{
author={Jankovic Vladimir Z},
year={2009},
title={A New Approach to Newton's Aerodynamic Problem},
journal={JOURNAL OF CONVEX ANALYSIS},
volume={16},
number={2},
pages={601-604},
document_type={Article},
}