%0 Journal Article %A Đorđe S. Đukić %T Contribution to Theory of First Integrals for Nonholonomic Mechanical Systems %J Zbornik radova %D 1984 %P 67 %V 4 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZR_1984_4_12_a7/ %G en %F ZR_1984_4_12_a7