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@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/} }
George Szeto. The Automorphism Group of a Class of Semi-Groups.. Monatshefte für Mathematik, Tome 83 (1977), pp. 53-58. http://geodesic.mathdoc.fr/item/MOMA_1977__83_177798/