%0 Journal Article
%A Thomas Vogel
%T Existence of Engel structures
%J Annals of mathematics
%D 2009
%P 79-137
%V 169
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4007/annals.2009.169.79/
%R 10.4007/annals.2009.169.79
%G en
%F 10_4007_annals_2009_169_79