%0 Journal Article
%A Alan Weinstein
%T The Invariance of Poincaré's Generating Function for Canonical Transformations.
%J Inventiones mathematicae
%D 1972
%P 202-213
%V 16
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM_1972__16_142143/
%F IM_1972__16_142143