@article{DAN_1969_186_3_a6,
     author = {A. V. Pogorelov},
     title = {A priori estimate of the principal radii of curvature of a closed convex hypersurface as a function of their mean values},
     journal = {Doklady Akademii Nauk},
     pages = {516--518},
     publisher = {mathdoc},
     volume = {186},
     number = {3},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_186_3_a6/}
}