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@article{DAN_1970_195_6_a14, author = {D. D. Sokoloff}, title = {On topology of universe models}, journal = {Doklady Akademii Nauk}, pages = {1307--1309}, publisher = {mathdoc}, volume = {195}, number = {6}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1970_195_6_a14/} }
D. D. Sokoloff. On topology of universe models. Doklady Akademii Nauk, Tome 195 (1970) no. 6, pp. 1307-1309. http://geodesic.mathdoc.fr/item/DAN_1970_195_6_a14/