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@article{SF_1976__12_134185, author = {A.H. Clifford}, title = {The fundamental representation of a completely regular semigroup.}, journal = {Semigroup forum}, pages = {341--346}, publisher = {mathdoc}, volume = {12}, year = {1976}, zbl = {0345.20060}, url = {http://geodesic.mathdoc.fr/item/SF_1976__12_134185/} }
A.H. Clifford. The fundamental representation of a completely regular semigroup.. Semigroup forum, Tome 12 (1976), pp. 341-346. http://geodesic.mathdoc.fr/item/SF_1976__12_134185/