TY  - JOUR
AU  - V. G. Sheretov
TI  - Tests for extremality in a problem for quasiconformal mappings
JO  - Matematičeskie zametki
PY  - 1986
SP  - 14
EP  - 23
VL  - 39
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1986_39_1_a1/
LA  - ru
ID  - MZM_1986_39_1_a1
ER  -