%0 Journal Article
%A C.C. Conley
%A E. Zehnder
%T The Birkhoff-Lewis Fixed Point Theorem and a Conjecture of V.I. Arnold.
%J Inventiones mathematicae
%D 1983
%P 33-50
%V 73
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM_1983__73_143034/
%F IM_1983__73_143034