TY  - JOUR
AU  - Imre Z. Ruzsa
TI  - Logarithmic Density and Measures on Semigroups.
JO  - Manuscripta mathematica
PY  - 1996
SP  - 307
EP  - 318
VL  - 89
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MM2_1996__89_3_156164/
ID  - MM2_1996__89_3_156164
ER  -