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@article{DAN_1969_188_2_a6, author = {N. S. Lashnev}, title = {Perfect irreducible mappings of completely regular spaces}, journal = {Doklady Akademii Nauk}, pages = {282--285}, publisher = {mathdoc}, volume = {188}, number = {2}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1969_188_2_a6/} }
N. S. Lashnev. Perfect irreducible mappings of completely regular spaces. Doklady Akademii Nauk, Tome 188 (1969) no. 2, pp. 282-285. http://geodesic.mathdoc.fr/item/DAN_1969_188_2_a6/