%0 Journal Article %A N. Yu. Kapustin %T Problems on the convergence of spectral expansions in eigen- and associated functions of a parabolic operator %J Differencialʹnye uravneniâ %D 1986 %P 1616-1618 %V 22 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1986_22_9_a20/ %G ru %F DE_1986_22_9_a20