@article{DE_1965_1_11_a3,
     author = {I. M. Lavrent'ev},
     title = {On an existence theorem for differential equations with discontinuous right-hand members},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1477--1481},
     publisher = {mathdoc},
     volume = {1},
     number = {11},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1965_1_11_a3/}
}