TY  - JOUR
AU  - Ji-Ping Sha
TI  - A secondary Chern-Euler class
JO  - Annals of mathematics
PY  - 1999
VL  - 150
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.2307/121065/
DO  - 10.2307/121065
ID  - 10_2307_121065
ER  -