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@article{MAN_1988__282_2_164460, author = {Torben Maack Bisgaard}, title = {Extension of {Characters} on {*-Semigroups.}}, journal = {Mathematische Annalen}, pages = {251--258}, publisher = {mathdoc}, volume = {282}, number = {2}, year = {1988}, zbl = {0629.20040}, url = {http://geodesic.mathdoc.fr/item/MAN_1988__282_2_164460/} }
Torben Maack Bisgaard. Extension of Characters on *-Semigroups.. Mathematische Annalen, Tome 282 (1988) no. 2, pp. 251-258. http://geodesic.mathdoc.fr/item/MAN_1988__282_2_164460/