TY - JOUR AU - Nie, Zhaohu TI - On Sha's Secondary Chern–Euler Class JO - Canadian mathematical bulletin PY - 2012 SP - 586 EP - 596 VL - 55 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-2011-089-1/ DO - 10.4153/CMB-2011-089-1 ID - 10_4153_CMB_2011_089_1 ER -