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@article{SF_1996__52_3_135434, author = {M.B. Szendrei}, title = {The bifree regular {E-solid} semigroups.}, journal = {Semigroup forum}, pages = {61--82}, publisher = {mathdoc}, volume = {52}, number = {3}, year = {1996}, zbl = {0841.20053}, url = {http://geodesic.mathdoc.fr/item/SF_1996__52_3_135434/} }
M.B. Szendrei. The bifree regular E-solid semigroups.. Semigroup forum, Tome 52 (1996) no. 3, pp. 61-82. http://geodesic.mathdoc.fr/item/SF_1996__52_3_135434/