TY  - JOUR
AU  - A. Janssen
TI  - A general purity law for convolution semigroups with discrete Levy measure.
JO  - Semigroup forum
PY  - 1980
SP  - 55
EP  - 72
VL  - 20
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1980__20_134403/
ID  - SF_1980__20_134403
ER  -