Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1970_8_a1, author = {V. A. Belyaev}, title = {The sets of convergence of double power series}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {10--18}, publisher = {mathdoc}, number = {8}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1970_8_a1/} }
V. A. Belyaev. The sets of convergence of double power series. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 8 (1970), pp. 10-18. http://geodesic.mathdoc.fr/item/IVM_1970_8_a1/