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@article{MZM_1969_6_5_a9, author = {R. M. Min'kova and Yu. A. Shashkin}, title = {On the convergence of linear operators of the class $S_m$}, journal = {Matemati\v{c}eskie zametki}, pages = {591--598}, publisher = {mathdoc}, volume = {6}, number = {5}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1969_6_5_a9/} }
R. M. Min'kova; Yu. A. Shashkin. On the convergence of linear operators of the class $S_m$. Matematičeskie zametki, Tome 6 (1969) no. 5, pp. 591-598. http://geodesic.mathdoc.fr/item/MZM_1969_6_5_a9/