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@article{DE_1983_19_3_a1, author = {V. A. Erovenko}, title = {Selfadjointness of a differential operator with periodic coefficients}, journal = {Differencialʹnye uravneni\^a}, pages = {380--387}, publisher = {mathdoc}, volume = {19}, number = {3}, year = {1983}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1983_19_3_a1/} }
V. A. Erovenko. Selfadjointness of a differential operator with periodic coefficients. Differencialʹnye uravneniâ, Tome 19 (1983) no. 3, pp. 380-387. http://geodesic.mathdoc.fr/item/DE_1983_19_3_a1/