%0 Journal Article %A N. N. Beloozerov %T Addition theorems for Legendre functions as corollaries of an addition theorem for Gegenbauer polynomials %J Matematičeskie zametki %D 1976 %P 321-330 %V 20 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1976_20_3_a2/ %G ru %F MZM_1976_20_3_a2