TY  - JOUR
AU  - Walter Schempp
TI  - On Functions of Positive Type on Commutative Monoids.
JO  - Mathematische Zeitschrift
PY  - 1977
SP  - 115
EP  - 122
VL  - 156
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1977__156_172573/
ID  - MZ_1977__156_172573
ER  -