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@article{IVM_1971_12_a11, author = {A. G. Lebed'}, title = {Linear summability methods, and absolute convergence of double {Fourier} series}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {91--102}, publisher = {mathdoc}, number = {12}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1971_12_a11/} }
A. G. Lebed'. Linear summability methods, and absolute convergence of double Fourier series. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 12 (1971), pp. 91-102. http://geodesic.mathdoc.fr/item/IVM_1971_12_a11/