TY  - JOUR
AU  - Alejandro Illanes
TI  - The openness of induced maps on hyperspaces
JO  - Colloquium Mathematicum
PY  - 1997
SP  - 219
EP  - 224
VL  - 74
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm-74-2-219-224/
DO  - 10.4064/cm-74-2-219-224
LA  - en
ID  - 10_4064_cm_74_2_219_224
ER  -