TY  - JOUR
AU  - G. I. Kats
TI  - Generalization of the group principle of duality
JO  - Doklady Akademii Nauk
PY  - 1961
SP  - 275
EP  - 278
VL  - 138
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1961_138_2_a6/
LA  - ru
ID  - DAN_1961_138_2_a6
ER  -