@article{MZ_1984__187_173492,
     author = {Denis Feyel},
     title = {Processus ab\'eliens associ\'es \`a un semi-groupe.},
     journal = {Mathematische Zeitschrift},
     pages = {305--316},
     publisher = {mathdoc},
     volume = {187},
     year = {1984},
     zbl = {0547.47005},
     url = {http://geodesic.mathdoc.fr/item/MZ_1984__187_173492/}
}