@article{DAN_1983_269_6_a11,
     author = {N. N. Polyakhov and S. A. Zegzhda and M. P. Yushkov},
     title = {Generalization of {Gauss's} principle to nonholonomic systems of higher orders},
     journal = {Doklady Akademii Nauk},
     pages = {1328--1330},
     publisher = {mathdoc},
     volume = {269},
     number = {6},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1983_269_6_a11/}
}