%0 Journal Article %A Pengcheng, Niu %A Yanwu, Han %A Junqiang, Han %T A Hopf Type Lemma and a $\text{CR}$ Type Inversion for the Generalized Greiner Operator %J Canadian mathematical bulletin %D 2004 %P 417-430 %V 47 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-2004-041-4/ %R 10.4153/CMB-2004-041-4 %F 10_4153_CMB_2004_041_4