@article{DAN_1967_173_6_a9,
     author = {A. V. Pogorelov},
     title = {A priori estimates for radii of curvature of a convex surface},
     journal = {Doklady Akademii Nauk},
     pages = {1267--1269},
     publisher = {mathdoc},
     volume = {173},
     number = {6},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_173_6_a9/}
}