%0 Journal Article %A V. I. Maksimov %T Modeling controls and coefficients in parabolic evolution systems %J Differencialʹnye uravneniâ %D 1990 %P 237-246 %V 26 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1990_26_2_a6/ %G ru %F DE_1990_26_2_a6