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@article{SF_1991__42_3_135071, author = {M.E. Adams and M. Gould and S.T. Tschantz}, title = {The congruence class of an idempotent in a regular semigroup.}, journal = {Semigroup forum}, pages = {121--124}, publisher = {mathdoc}, volume = {42}, number = {3}, year = {1991}, zbl = {0741.20047}, url = {http://geodesic.mathdoc.fr/item/SF_1991__42_3_135071/} }
M.E. Adams; M. Gould; S.T. Tschantz. The congruence class of an idempotent in a regular semigroup.. Semigroup forum, Tome 42 (1991) no. 3, pp. 121-124. http://geodesic.mathdoc.fr/item/SF_1991__42_3_135071/