%0 Journal Article
%A Z. M. Narkun
%T Addition theorems for “outer” harmonic functions in elliptic coordinates
%J Differencialʹnye uravneniâ
%D 1979
%P 357-359
%V 15
%N 2
%U http://geodesic.mathdoc.fr/item/DE_1979_15_2_a22/
%G ru
%F DE_1979_15_2_a22