TY - JOUR AU - Pengcheng, Niu AU - Yanwu, Han AU - Junqiang, Han TI - A Hopf Type Lemma and a $\text{CR}$ Type Inversion for the Generalized Greiner Operator JO - Canadian mathematical bulletin PY - 2004 SP - 417 EP - 430 VL - 47 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-2004-041-4/ DO - 10.4153/CMB-2004-041-4 ID - 10_4153_CMB_2004_041_4 ER -