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@article{DE_1988_24_1_a14, author = {E. I. Moiseev}, title = {Disposition of the spectrum of a boundary value problem with mixed boundary conditions}, journal = {Differencialʹnye uravneni\^a}, pages = {123--135}, publisher = {mathdoc}, volume = {24}, number = {1}, year = {1988}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1988_24_1_a14/} }
E. I. Moiseev. Disposition of the spectrum of a boundary value problem with mixed boundary conditions. Differencialʹnye uravneniâ, Tome 24 (1988) no. 1, pp. 123-135. http://geodesic.mathdoc.fr/item/DE_1988_24_1_a14/