Jürgen Dassow, Victor Mitrana. Finite Automata over Free Groups. IJAC, 10(6):725-738, 2000. [doi]
@article{DassowM00, title = {Finite Automata over Free Groups}, author = {Jürgen Dassow and Victor Mitrana}, year = {2000}, doi = {10.1142/S0218196700000315}, url = {http://dx.doi.org/10.1142/S0218196700000315}, researchr = {https://researchr.org/publication/DassowM00}, cites = {0}, citedby = {0}, journal = {IJAC}, volume = {10}, number = {6}, pages = {725-738}, }