TY  - JOUR
AU  - Charles Loewner
TI  - A theorem on the partial order derived from a certain transformation semigroup.
JO  - Mathematische Zeitschrift
PY  - 1959
SP  - 53
EP  - 60
VL  - 72
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1959__72_183594/
ID  - MZ_1959__72_183594
ER  -