%0 Journal Article
%A Krejčí, Pavel
%T Hard implicit function theorem and small periodic solutions to partial differential equations
%J Commentationes Mathematicae Universitatis Carolinae
%D 1984
%P 519-536
%V 25
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMUC_1984__25_3_a8/
%G en
%F CMUC_1984__25_3_a8