TY  - JOUR
AU  - Ho, Chung-Wu
TI  - When are Immersions Diffeomorphisms?
JO  - Canadian mathematical bulletin
PY  - 1981
SP  - 491
EP  - 492
VL  - 24
IS  - 4
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1981-074-5/
DO  - 10.4153/CMB-1981-074-5
ID  - 10_4153_CMB_1981_074_5
ER  -