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@article{MI_1981__64_189630, author = {{\CYRI}.{\CYRYU}. {\CYRR}{\cyra}{\cyrch}{\cyre}{\cyrk} and {\CYRV}.{\CYRL}. {\CYRP}{\cyri}{\cyrn}{\cyrs}{\cyrk}{\cyri}{\cyrishrt}}, title = {{\CYRO}{\cyrb} {\cyru}{\cyrs}{\cyrl}{\cyro}{\cyrv}{\cyri}{\cyrya}{\cyrh} {\cyrr}{\cyra}{\cyrv}{\cyrn}{\cyro}{\cyrv}{\cyre}{\cyrs}{\cyri}{\cyrya} {\cyrn}{\cyre}{\cyrg}{\cyro}{\cyrl}{\cyro}{\cyrn}{\cyro}{\cyrm}{\cyrn}{\cyrery}{\cyrh} {\cyrs}{\cyri}{\cyrs}{\cyrt}{\cyre}{\cyrm}}, journal = {Matemati\v{c}eskie issledovani\^a}, pages = {113--117}, publisher = {mathdoc}, volume = {64}, year = {1981}, zbl = {0514.70009}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MI_1981__64_189630/} }
И.Ю. Рачек; В.Л. Пинский. Об условиях равновесия неголономных систем. Matematičeskie issledovaniâ, Tome 64 (1981), pp. 113-117. http://geodesic.mathdoc.fr/item/MI_1981__64_189630/