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@article{DE_1966_2_1_a3, author = {T. I. Zelenyak}, title = {Asymptotic solution of a mixed problem}, journal = {Differencialʹnye uravneni\^a}, pages = {47--64}, publisher = {mathdoc}, volume = {2}, number = {1}, year = {1966}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1966_2_1_a3/} }
T. I. Zelenyak. Asymptotic solution of a mixed problem. Differencialʹnye uravneniâ, Tome 2 (1966) no. 1, pp. 47-64. http://geodesic.mathdoc.fr/item/DE_1966_2_1_a3/