@article{DE_1986_22_3_a19,
     author = {L. N. Lyapin},
     title = {The {Uryson} equation with a discontinuous operator},
     journal = {Differencialʹnye uravneni\^a},
     pages = {509--518},
     publisher = {mathdoc},
     volume = {22},
     number = {3},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1986_22_3_a19/}
}