%0 Journal Article
%A M. Jotz
%A K.-H. Neeb 
%T Closedness of the Tangent Spaces to the Orbits of Proper Actions
%J Journal of Lie theory
%D 2008
%P 517-521
%V 18
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/JLT_2008_18_3_JLT_2008_18_3_a1/
%F JLT_2008_18_3_JLT_2008_18_3_a1