%0 Journal Article %A L. A. Lepin %T Countable spectrum of the eigenfunctions of the nonlinear heat equation with distributed parameters %J Differencialʹnye uravneniâ %D 1988 %P 1226-1234 %V 24 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1988_24_7_a16/ %G ru %F DE_1988_24_7_a16