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@article{MOMA_1994__117_3-4_178647, author = {John Fountain and Victoria Gould}, title = {Idempotent {Bounded} {Semi-Groups.}}, journal = {Monatshefte f\"ur Mathematik}, pages = {237--254}, publisher = {mathdoc}, volume = {117}, number = {3-4}, year = {1994}, zbl = {0813.20068}, url = {http://geodesic.mathdoc.fr/item/MOMA_1994__117_3-4_178647/} }
John Fountain; Victoria Gould. Idempotent Bounded Semi-Groups.. Monatshefte für Mathematik, Tome 117 (1994) no. 3-4, pp. 237-254. http://geodesic.mathdoc.fr/item/MOMA_1994__117_3-4_178647/