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@article{SF_1977__15_134266, author = {R.H. Oehmke}, title = {The semigroup of a strongly connected automaton.}, journal = {Semigroup forum}, pages = {351--356}, publisher = {mathdoc}, volume = {15}, year = {1977}, zbl = {0383.20056}, url = {http://geodesic.mathdoc.fr/item/SF_1977__15_134266/} }
R.H. Oehmke. The semigroup of a strongly connected automaton.. Semigroup forum, Tome 15 (1977), pp. 351-356. http://geodesic.mathdoc.fr/item/SF_1977__15_134266/