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@article{DAN_1989_305_6_a5, author = {V. B. Marenich}, title = {The structure of open manifolds of nonnegative curvature}, journal = {Doklady Akademii Nauk}, pages = {1311--1314}, publisher = {mathdoc}, volume = {305}, number = {6}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1989_305_6_a5/} }
V. B. Marenich. The structure of open manifolds of nonnegative curvature. Doklady Akademii Nauk, Tome 305 (1989) no. 6, pp. 1311-1314. http://geodesic.mathdoc.fr/item/DAN_1989_305_6_a5/