%0 Journal Article
%A Calin, Ovidiu
%A Chang, Der-Chen
%A Markina, Irina
%T SubRiemannian Geometry on the Sphere S3
%J Canadian journal of mathematics
%D 2009
%P 721-739
%V 61
%N 4
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-2009-039-2/
%R 10.4153/CJM-2009-039-2
%F 10_4153_CJM_2009_039_2