TY  - JOUR
AU  - S. Ya. Gusman
TI  - Schottky--Ahlfors forms and certain extremal problems on differentiable manifolds
JO  - Doklady Akademii Nauk
PY  - 1966
SP  - 246
EP  - 248
VL  - 170
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1966_170_2_a2/
LA  - ru
ID  - DAN_1966_170_2_a2
ER  -