@ARTICLE{
author={Vujicic Veljko A,Trisovic Natasa R},
year={2011},
title={The Invariance of Oscillatory Mechanical Systems},
journal={VIBRATION PROBLEMS, ICOVP 2011, SUPPLEMENT},
volume={},
number={},
pages={268-273},
document_type={Proceedings Paper},
} 

@ARTICLE{
author={Vujicic Veljko A},
year={2009},
title={Dynamical Paradox in Theory of Lunar Motion},
journal={INTERNATIONAL JOURNAL OF NONLINEAR SCIENCES AND NUMERICAL SIMULATION},
volume={10},
number={11-12},
pages={1539-1543},
document_type={Article},
} 

@ARTICLE{
author={Vujicic Veljko A,He JH},
year={2004},
title={On two fundamental statements of mechanics},
journal={INTERNATIONAL JOURNAL OF NONLINEAR SCIENCES AND NUMERICAL SIMULATION},
volume={5},
number={3},
pages={283-286},
document_type={Article},
} 

@ARTICLE{
author={Vujicic Veljko A},
year={2004},
title={On one generalization of Newton's law of gravitation},
journal={INTERNATIONAL APPLIED MECHANICS},
volume={40},
number={3},
pages={351-359},
document_type={Article},
}