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@article{DE_1975_11_4_a3, author = {R. \`E. Vinograd}, title = {On a problem of {N.} {P.} {Erugin}}, journal = {Differencialʹnye uravneni\^a}, pages = {632--638}, publisher = {mathdoc}, volume = {11}, number = {4}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1975_11_4_a3/} }
R. È. Vinograd. On a problem of N. P. Erugin. Differencialʹnye uravneniâ, Tome 11 (1975) no. 4, pp. 632-638. http://geodesic.mathdoc.fr/item/DE_1975_11_4_a3/