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@article{SF_1993__47_2_135280, author = {R. Goldstein and J. Teymouri}, title = {Adjan's theorem and conjugacy in semigroups.}, journal = {Semigroup forum}, pages = {299--304}, publisher = {mathdoc}, volume = {47}, number = {2}, year = {1993}, zbl = {0797.20043}, url = {http://geodesic.mathdoc.fr/item/SF_1993__47_2_135280/} }
R. Goldstein; J. Teymouri. Adjan's theorem and conjugacy in semigroups.. Semigroup forum, Tome 47 (1993) no. 2, pp. 299-304. http://geodesic.mathdoc.fr/item/SF_1993__47_2_135280/