@article{VMUMM_1983_1_a15,
     author = {V. N. Brendelev},
     title = {On the question of nonlinear nonholonomic constraints},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {60--65},
     publisher = {mathdoc},
     number = {1},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1983_1_a15/}
}