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@article{DAN_1961_141_1_a12, author = {A. S. Schwarz}, title = {On the homotopy theory of fiber spaces}, journal = {Doklady Akademii Nauk}, pages = {51--54}, publisher = {mathdoc}, volume = {141}, number = {1}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_141_1_a12/} }
A. S. Schwarz. On the homotopy theory of fiber spaces. Doklady Akademii Nauk, Tome 141 (1961) no. 1, pp. 51-54. http://geodesic.mathdoc.fr/item/DAN_1961_141_1_a12/