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@article{SF_1974__8_134023, author = {F.R. McMorris and C.S. jr. Johnson}, title = {Semigroups for which every {S-system} has the natural partial order.}, journal = {Semigroup forum}, pages = {51--55}, publisher = {mathdoc}, volume = {8}, year = {1974}, zbl = {0284.20064}, url = {http://geodesic.mathdoc.fr/item/SF_1974__8_134023/} }
F.R. McMorris; C.S. jr. Johnson. Semigroups for which every S-system has the natural partial order.. Semigroup forum, Tome 8 (1974), pp. 51-55. http://geodesic.mathdoc.fr/item/SF_1974__8_134023/