@article{DAN_1974_216_2_a6,
     author = {A. V. Pogorelov},
     title = {A bound for the principal radii of curvature of a closed convex hypersurface},
     journal = {Doklady Akademii Nauk},
     pages = {264--266},
     publisher = {mathdoc},
     volume = {216},
     number = {2},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_216_2_a6/}
}