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@article{DAN_1979_244_1_a3, author = {O. A. Ziza}, title = {On the application of summability methods of class $(\varphi,\lambda)$ to orthogonal series}, journal = {Doklady Akademii Nauk}, pages = {24--28}, publisher = {mathdoc}, volume = {244}, number = {1}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1979_244_1_a3/} }
O. A. Ziza. On the application of summability methods of class $(\varphi,\lambda)$ to orthogonal series. Doklady Akademii Nauk, Tome 244 (1979) no. 1, pp. 24-28. http://geodesic.mathdoc.fr/item/DAN_1979_244_1_a3/