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@article{SF_1986__35_134882, author = {L.X. Zhang}, title = {A characterization of rational star languages generated by strong codes.}, journal = {Semigroup forum}, pages = {373--376}, publisher = {mathdoc}, volume = {35}, year = {1986}, zbl = {0624.20046}, url = {http://geodesic.mathdoc.fr/item/SF_1986__35_134882/} }
L.X. Zhang. A characterization of rational star languages generated by strong codes.. Semigroup forum, Tome 35 (1986), pp. 373-376. http://geodesic.mathdoc.fr/item/SF_1986__35_134882/