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@article{DAN_1977_237_3_a0, author = {S. P. Gul'ko}, title = {On properties of subsets of $\Sigma$-products}, journal = {Doklady Akademii Nauk}, pages = {505--508}, publisher = {mathdoc}, volume = {237}, number = {3}, year = {1977}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1977_237_3_a0/} }
S. P. Gul'ko. On properties of subsets of $\Sigma$-products. Doklady Akademii Nauk, Tome 237 (1977) no. 3, pp. 505-508. http://geodesic.mathdoc.fr/item/DAN_1977_237_3_a0/