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"A Note on Decidability Questions on Presentations of Word Semigroups."
Christian Choffrut, Tero Harju, Juhani Karhumäki (1997)
- Christian Choffrut, Tero Harju, Juhani Karhumäki:
A Note on Decidability Questions on Presentations of Word Semigroups. Theor. Comput. Sci. 183(1): 83-92 (1997)
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