TY  - JOUR
AU  - Yu, Bin
TI  - A note on homotopy classes of nonsingular vector fields on $ {S}^{3}$
JO  - Comptes Rendus. Mathématique
PY  - 2014
SP  - 351
EP  - 355
VL  - 352
IS  - 4
PB  - Elsevier
UR  - http://www.numdam.org/articles/10.1016/j.crma.2014.01.016/
DO  - 10.1016/j.crma.2014.01.016
LA  - en
ID  - CRMATH_2014__352_4_351_0
ER  -