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@article{SF_1980__21_134447, author = {M.S. Putcha}, title = {Cancellative subsemigroups of archimedean semigroups.}, journal = {Semigroup forum}, pages = {187--194}, publisher = {mathdoc}, volume = {21}, year = {1980}, zbl = {0451.20049}, url = {http://geodesic.mathdoc.fr/item/SF_1980__21_134447/} }
M.S. Putcha. Cancellative subsemigroups of archimedean semigroups.. Semigroup forum, Tome 21 (1980), pp. 187-194. http://geodesic.mathdoc.fr/item/SF_1980__21_134447/