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@article{INTG_1975_7_a4, author = {S. V. Vedernikov}, title = {Special morphisms of $G$-spaces}, journal = {Itogi Nauki i Tekhniki. Seriya Problemy Geometrii. Trudy Geometricheskogo Seminara}, pages = {49--68}, publisher = {mathdoc}, volume = {7}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/INTG_1975_7_a4/} }
S. V. Vedernikov. Special morphisms of $G$-spaces. Itogi Nauki i Tekhniki. Seriya Problemy Geometrii. Trudy Geometricheskogo Seminara, Itogi Nauki i Tekhniki. Seriya "Problemy Geometrii", Tome 7 (1975), pp. 49-68. http://geodesic.mathdoc.fr/item/INTG_1975_7_a4/