%0 Journal Article %A Yu. V. Svishchev %T Calculation of coefficients in addition theorems for spherical wave functions and Debye potentials %J Differencialʹnye uravneniâ %D 1992 %P 1573-1579 %V 28 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1992_28_9_a11/ %G ru %F DE_1992_28_9_a11