@article{GDZPPN001253999, title = {A general purity law for convolution semigroups with discrete Levy measure.}, journal = {Semigroup forum}, volume = {20}, year = {1980}, pages = {55-72}, zbl = {0442.60015}, url = {http://dml.mathdoc.fr/item/GDZPPN001253999} }
Janssen, A. A general purity law for convolution semigroups with discrete Levy measure.. Semigroup forum, Tome 20 (1980) pp. 55-72. http://gdmltest.u-ga.fr/item/GDZPPN001253999/