TY  - JOUR
AU  - Calin, Ovidiu
AU  - Chang, Der-Chen
AU  - Markina, Irina
TI  - SubRiemannian Geometry on the Sphere S3
JO  - Canadian journal of mathematics
PY  - 2009
SP  - 721
EP  - 739
VL  - 61
IS  - 4
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-2009-039-2/
DO  - 10.4153/CJM-2009-039-2
ID  - 10_4153_CJM_2009_039_2
ER  -