TY  - JOUR
AU  - Harold Bell
TI  - Fixed points, index, and degree for some set valued functions
JO  - Fundamenta Mathematicae
PY  - 1970
SP  - 213
EP  - 217
VL  - 69
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/fm-69-3-213-217/
DO  - 10.4064/fm-69-3-213-217
LA  - en
ID  - 10_4064_fm_69_3_213_217
ER  -