%0 Journal Article %A V. V. Zhikov %T Monotonicity in the theory of almost periodic solutions of nonlinear operator equations %J Sbornik. Mathematics %D 1973 %P 209-223 %V 19 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1973_19_2_a4/ %G en %F SM_1973_19_2_a4