@article{MAN_1978__236_163170,
     author = {P.H. Maserick},
     title = {A {Levy-Khinchin} {Formula} for {Semigroups} with {Involutions.}},
     journal = {Mathematische Annalen},
     pages = {209--216},
     year = {1978},
     volume = {236},
     zbl = {0385.31009},
     url = {http://geodesic.mathdoc.fr/item/MAN_1978__236_163170/}
}