%0 Journal Article %A I. B. Simonenko %T Higher approximations of the averaging method for abstract parabolic equations %J Sbornik. Mathematics %D 1973 %P 535-543 %V 21 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1973_21_4_a3/ %G en %F SM_1973_21_4_a3