@article{DE_1970_6_4_a5,
     author = {M. A. Krasnosel'skii and A. D. Myshkis},
     title = {A certain dynamical problem of mechanics without uniqueness},
     journal = {Differencialʹnye uravneni\^a},
     pages = {634--643},
     publisher = {mathdoc},
     volume = {6},
     number = {4},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1970_6_4_a5/}
}