%0 Journal Article
%A Kastenholz, Michael
%A Lange, Horst
%A Nieder, Dirk
%T Periodic solutions of nonlinear Schrödinger equations
%J Portugaliae mathematica
%D 1989
%P 517-537
%V 46
%N S
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PORMA_1989__46_S_115830/
%G en
%F PORMA_1989__46_S_115830