@article{VMUMM_2017_2_a4,
     author = {V. G. Vil'ke and T. M. Polenova},
     title = {Sliding of a body on snow},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {29--34},
     year = {2017},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2017_2_a4/}
}