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@article{DE_1990_26_10_a13, author = {L. M. Fridman}, title = {Singular redefinitions of discontinuous systems, and stability}, journal = {Differencialʹnye uravneni\^a}, pages = {1759--1765}, publisher = {mathdoc}, volume = {26}, number = {10}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1990_26_10_a13/} }
L. M. Fridman. Singular redefinitions of discontinuous systems, and stability. Differencialʹnye uravneniâ, Tome 26 (1990) no. 10, pp. 1759-1765. http://geodesic.mathdoc.fr/item/DE_1990_26_10_a13/