TY  - JOUR
AU  - Nguyen Van Chau
TI  - Note on the Jacobian condition and the
 non-proper value set
JO  - Annales Polonici Mathematici
PY  - 2004
SP  - 203
EP  - 210
VL  - 84
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ap84-3-2/
DO  - 10.4064/ap84-3-2
LA  - en
ID  - 10_4064_ap84_3_2
ER  -