TY  - JOUR
AU  - V. A. Chikin
TI  - A generalization of a theorem of Huygens
JO  - Doklady Akademii Nauk
PY  - 1962
SP  - 1058
EP  - 1060
VL  - 142
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1962_142_5_a22/
LA  - ru
ID  - DAN_1962_142_5_a22
ER  -