TY  - JOUR
AU  - V. K. Ionin
TI  - Relations between the radii of the inscribed and circumscribed spheres of a closed, convex surface
JO  - Doklady Akademii Nauk
PY  - 1963
SP  - 268
EP  - 270
VL  - 148
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1963_148_2_a6/
LA  - ru
ID  - DAN_1963_148_2_a6
ER  -