Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1958_120_4_a8, author = {V. A. Toponogov}, title = {Riemannian spaces having their curvature bounded below by a positive number}, journal = {Doklady Akademii Nauk}, pages = {719--721}, publisher = {mathdoc}, volume = {120}, number = {4}, year = {1958}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1958_120_4_a8/} }
V. A. Toponogov. Riemannian spaces having their curvature bounded below by a positive number. Doklady Akademii Nauk, Tome 120 (1958) no. 4, pp. 719-721. http://geodesic.mathdoc.fr/item/DAN_1958_120_4_a8/