%0 Journal Article
%A R. J. Alonso-Blanco
%A D. Bl�zquez-Sanz 
%T The Only Global Contact Transformations of Order Two or More are Point Transformations
%J Journal of Lie theory
%D 2005
%P 135-143
%V 15
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/JLT_2005_15_1_JLT_2005_15_1_a9/
%F JLT_2005_15_1_JLT_2005_15_1_a9