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@article{SF_1972__4_133896, author = {G.R. Baird and G. Thierrin}, title = {On semigroups in which every {Rees} one-sided congruence is a congruence.}, journal = {Semigroup forum}, pages = {215--223}, publisher = {mathdoc}, volume = {4}, year = {1972}, zbl = {0265.20058}, url = {http://geodesic.mathdoc.fr/item/SF_1972__4_133896/} }
G.R. Baird; G. Thierrin. On semigroups in which every Rees one-sided congruence is a congruence.. Semigroup forum, Tome 4 (1972), pp. 215-223. http://geodesic.mathdoc.fr/item/SF_1972__4_133896/