%0 Journal Article %A Rosales, Leobardo %T Generalizing Hopf’s Boundary Point Lemma %J Canadian mathematical bulletin %D 2019 %P 183-197 %V 62 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-2017-074-6/ %R 10.4153/CMB-2017-074-6 %F 10_4153_CMB_2017_074_6