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@article{DE_1987_23_10_a9, author = {A. I. Vahabov}, title = {Fourier series expansions in principal functions of an elliptic operator}, journal = {Differencialʹnye uravneni\^a}, pages = {1736--1745}, publisher = {mathdoc}, volume = {23}, number = {10}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1987_23_10_a9/} }
A. I. Vahabov. Fourier series expansions in principal functions of an elliptic operator. Differencialʹnye uravneniâ, Tome 23 (1987) no. 10, pp. 1736-1745. http://geodesic.mathdoc.fr/item/DE_1987_23_10_a9/