TY  - JOUR
AU  - V. V. Volchkov
TI  - New two-radii theorems in the theory of harmonic functions
JO  - Izvestiya. Mathematics 
PY  - 1995
SP  - 181
EP  - 192
VL  - 44
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1995_44_1_a8/
LA  - en
ID  - IM2_1995_44_1_a8
ER  -