%0 Journal Article %A V. T. Erofeenko %T Addition theorems connected with toroidal, cylindrical and spherical harmonic functions %J Differencialʹnye uravneniâ %D 1983 %P 1416-1427 %V 19 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1983_19_8_a15/ %G ru %F DE_1983_19_8_a15