%0 Journal Article %A N. Mahmetzhanov %T Expansion of functions belonging to $L_p$ in the eigenfunctions of certain elliptic operators %J Differencialʹnye uravneniâ %D 1972 %P 1825-1834 %V 8 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1972_8_10_a12/ %G ru %F DE_1972_8_10_a12