TY  - JOUR
AU  - Z. M. Narkun
TI  - Addition theorems for ``outer'' harmonic functions in elliptic coordinates
JO  - Differencialʹnye uravneniâ
PY  - 1979
SP  - 357
EP  - 359
VL  - 15
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1979_15_2_a22/
LA  - ru
ID  - DE_1979_15_2_a22
ER  -