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@article{SF_1980__21_134442, author = {G. Thierrin and H. J\"urgensen}, title = {Semigroups with each element disjunctive.}, journal = {Semigroup forum}, pages = {127--142}, publisher = {mathdoc}, volume = {21}, year = {1980}, zbl = {0454.20050}, url = {http://geodesic.mathdoc.fr/item/SF_1980__21_134442/} }
G. Thierrin; H. Jürgensen. Semigroups with each element disjunctive.. Semigroup forum, Tome 21 (1980), pp. 127-142. http://geodesic.mathdoc.fr/item/SF_1980__21_134442/