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@article{SF_1993__46_1_135216, author = {L.B. Stephen}, title = {Inverse monoids and rational subsets of related groups.}, journal = {Semigroup forum}, pages = {98--108}, publisher = {mathdoc}, volume = {46}, number = {1}, year = {1993}, zbl = {0807.20048}, url = {http://geodesic.mathdoc.fr/item/SF_1993__46_1_135216/} }
L.B. Stephen. Inverse monoids and rational subsets of related groups.. Semigroup forum, Tome 46 (1993) no. 1, pp. 98-108. http://geodesic.mathdoc.fr/item/SF_1993__46_1_135216/