%0 Journal Article %A A. Olejniczak %T Crank-Nicolson-Galerkin approximation of the periodic solutions of weakly nonlinear parabolic equations %J Applicationes Mathematicae %D 1983 %P 663-680 %V 18 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/am-18-4-663-680/ %R 10.4064/am-18-4-663-680 %G en %F 10_4064_am_18_4_663_680