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@article{DE_1985_21_6_a26, author = {S. A. Mazanik}, title = {On an approximating sequence}, journal = {Differencialʹnye uravneni\^a}, pages = {1089--1091}, publisher = {mathdoc}, volume = {21}, number = {6}, year = {1985}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1985_21_6_a26/} }
S. A. Mazanik. On an approximating sequence. Differencialʹnye uravneniâ, Tome 21 (1985) no. 6, pp. 1089-1091. http://geodesic.mathdoc.fr/item/DE_1985_21_6_a26/