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@article{IVM_1969_1_a12, author = {A. A. Fomin}, title = {Asymptotic properties of positive methods of summation of double {Fourier} series}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {89--96}, publisher = {mathdoc}, number = {1}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1969_1_a12/} }
A. A. Fomin. Asymptotic properties of positive methods of summation of double Fourier series. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 1 (1969), pp. 89-96. http://geodesic.mathdoc.fr/item/IVM_1969_1_a12/