TY  - JOUR
AU  - Roger D. Nussbaum
TI  - On the Uniqueness of the Topological Degree for k-Set-Contractions.
JO  - Mathematische Zeitschrift
PY  - 1974
SP  - 1
EP  - 6
VL  - 137
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1974__137_172052/
ID  - MZ_1974__137_172052
ER  -