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@article{DAN_1970_193_3_a2, author = {A. I. Veksler}, title = {$P$-sets in topological spaces}, journal = {Doklady Akademii Nauk}, pages = {510--513}, publisher = {mathdoc}, volume = {193}, number = {3}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1970_193_3_a2/} }
A. I. Veksler. $P$-sets in topological spaces. Doklady Akademii Nauk, Tome 193 (1970) no. 3, pp. 510-513. http://geodesic.mathdoc.fr/item/DAN_1970_193_3_a2/