@article{ZR_1984_4_12_a7, author = {{\DJ}or{\dj}e S. {\DJ}uki\'c}, title = {Contribution to {Theory} of {First} {Integrals} for {Nonholonomic} {Mechanical} {Systems}}, journal = {Zbornik radova}, pages = {67 }, publisher = {mathdoc}, volume = {4}, number = {12}, year = {1984}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ZR_1984_4_12_a7/} }