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@article{MZM_1979_25_2_a1, author = {O. A. Ziza}, title = {Summation of orthogonal series by the methods ($\varphi,\lambda$)}, journal = {Matemati\v{c}eskie zametki}, pages = {177--197}, publisher = {mathdoc}, volume = {25}, number = {2}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1979_25_2_a1/} }
O. A. Ziza. Summation of orthogonal series by the methods ($\varphi,\lambda$). Matematičeskie zametki, Tome 25 (1979) no. 2, pp. 177-197. http://geodesic.mathdoc.fr/item/MZM_1979_25_2_a1/