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@article{DAN_1988_299_3_a3, author = {A. I. Vagabov}, title = {$n$-fold summability of series in principal functions of pencils}, journal = {Doklady Akademii Nauk}, pages = {534--538}, publisher = {mathdoc}, volume = {299}, number = {3}, year = {1988}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1988_299_3_a3/} }
A. I. Vagabov. $n$-fold summability of series in principal functions of pencils. Doklady Akademii Nauk, Tome 299 (1988) no. 3, pp. 534-538. http://geodesic.mathdoc.fr/item/DAN_1988_299_3_a3/