TY  - JOUR
AU  - Krystyna Ziemian
TI  - Natural definition of entropy of semigroups
JO  - Colloquium Mathematicum
PY  - 1982
SP  - 105
EP  - 113
VL  - 46
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm-46-1-105-113/
DO  - 10.4064/cm-46-1-105-113
LA  - en
ID  - 10_4064_cm_46_1_105_113
ER  -