%0 Journal Article %A P. P. Mosolov %T Variational methods in nonstationary problems (parabolic case) %J Izvestiya. Mathematics %D 1970 %P 431-463 %V 4 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1970_4_2_a9/ %G en %F IM2_1970_4_2_a9