TY  - JOUR
AU  - Reinhard Pöschel
AU  - Klaus Denecke
TI  - A characterization of Sheffer functions by hyperidentities.
JO  - Semigroup forum
PY  - 1988
SP  - 351
EP  - 362
VL  - 37
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1988__37_1_134937/
ID  - SF_1988__37_1_134937
ER  -