@article{DE_1979_15_10_a8,
     author = {A. F. Filippov},
     title = {Differential equations whose right-hand side is discontinuous on intersecting surfaces},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1814--1823},
     publisher = {mathdoc},
     volume = {15},
     number = {10},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1979_15_10_a8/}
}