@article{SJIM_2020_23_3_a2,
     author = {O. E. Zubelevich},
     title = {The {D'Alembert---Lagrange} principle: a geometrical aspect},
     journal = {Sibirskij \v{z}urnal industrialʹnoj matematiki},
     pages = {31--39},
     publisher = {mathdoc},
     volume = {23},
     number = {3},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJIM_2020_23_3_a2/}
}