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@article{SF_1992__45_3_135171, author = {T.S. Blyth and E. Giraldes}, title = {Perfect elements in {Dubreil-Jacotin} regular semigroups.}, journal = {Semigroup forum}, pages = {55--62}, publisher = {mathdoc}, volume = {45}, number = {3}, year = {1992}, zbl = {0778.06012}, url = {http://geodesic.mathdoc.fr/item/SF_1992__45_3_135171/} }
T.S. Blyth; E. Giraldes. Perfect elements in Dubreil-Jacotin regular semigroups.. Semigroup forum, Tome 45 (1992) no. 3, pp. 55-62. http://geodesic.mathdoc.fr/item/SF_1992__45_3_135171/