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@article{DE_1969_5_2_a7, author = {\`E. I. Grudo}, title = {The solutions of a certain equation with periodic coefficients}, journal = {Differencialʹnye uravneni\^a}, pages = {296--304}, publisher = {mathdoc}, volume = {5}, number = {2}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1969_5_2_a7/} }
È. I. Grudo. The solutions of a certain equation with periodic coefficients. Differencialʹnye uravneniâ, Tome 5 (1969) no. 2, pp. 296-304. http://geodesic.mathdoc.fr/item/DE_1969_5_2_a7/