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@article{SF_1989__39_2_134973, author = {K.D. jr. Magill}, title = {Embedding semigroups into semigroups with countability index two.}, journal = {Semigroup forum}, pages = {51--58}, publisher = {mathdoc}, volume = {39}, number = {2}, year = {1989}, zbl = {0667.20051}, url = {http://geodesic.mathdoc.fr/item/SF_1989__39_2_134973/} }
K.D. jr. Magill. Embedding semigroups into semigroups with countability index two.. Semigroup forum, Tome 39 (1989) no. 2, pp. 51-58. http://geodesic.mathdoc.fr/item/SF_1989__39_2_134973/