@article{MAN_1979__246_163341,
     author = {Arnold Janssen},
     title = {Charakterisierung stetiger {Faltungshalbgruppen} durch das {L\'evy-Ma{\ss}.}},
     journal = {Mathematische Annalen},
     pages = {233--240},
     publisher = {mathdoc},
     volume = {246},
     year = {1979},
     zbl = {0407.60005},
     url = {http://geodesic.mathdoc.fr/item/MAN_1979__246_163341/}
}