@article{MOMA_1977__83_177798,
     author = {George Szeto},
     title = {The {Automorphism} {Group} of a {Class} of {Semi-Groups.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {53--58},
     publisher = {mathdoc},
     volume = {83},
     year = {1977},
     zbl = {0364.20070},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1977__83_177798/}
}