TY  - JOUR
AU  - A. Yanushauskas
TI  - On the zeros of the gradient of a harmonic function
JO  - Doklady Akademii Nauk
PY  - 1964
SP  - 547
EP  - 549
VL  - 158
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1964_158_3_a12/
LA  - ru
ID  - DAN_1964_158_3_a12
ER  -