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@article{DE_1983_19_1_a9, author = {T. Sh. Kal'menov}, title = {Selfadjoint boundary value problems for the {Tricomi} equation}, journal = {Differencialʹnye uravneni\^a}, pages = {66--75}, publisher = {mathdoc}, volume = {19}, number = {1}, year = {1983}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1983_19_1_a9/} }
T. Sh. Kal'menov. Selfadjoint boundary value problems for the Tricomi equation. Differencialʹnye uravneniâ, Tome 19 (1983) no. 1, pp. 66-75. http://geodesic.mathdoc.fr/item/DE_1983_19_1_a9/