%0 Journal Article %A L. A. Lepin %T Eigenfunction spectra for nonlinear heat equation in media with various density distributions %J Matematičeskoe modelirovanie %D 1989 %P 150-159 %V 1 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM_1989_1_1_a12/ %G ru %F MM_1989_1_1_a12