%0 Journal Article
%A Robert L. Bryant
%A Lucas Hsu
%T Rigidity of integral curves of rank 2 distributions.
%J Inventiones mathematicae
%D 1993
%P 435-462
%V 114
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM_1993__114_1_144154/
%F IM_1993__114_1_144154