@article{DE_1986_22_8_a24,
     author = {L. M. Fridman},
     title = {On singular passages to the limit in case of extension of discontinuous systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1461--1463},
     publisher = {mathdoc},
     volume = {22},
     number = {8},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1986_22_8_a24/}
}