TY  - JOUR
AU  - Mordechai Lewin
TI  - Choice Mappings of Certain Classes of Finite Sets.
JO  - Mathematische Zeitschrift
PY  - 1972
SP  - 23
EP  - 36
VL  - 124
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1972__124_171652/
ID  - MZ_1972__124_171652
ER  -