References
- Bartholdi, L., Silva, P. V. (2010). Rational subsets of groups. In Handbook AutoMathA, Chapter 23 (to appear), arXiv:1012.1532.
- Baumslag, B. (1966). Intersections of finitely generated subgroups in free products. J. Lond. Math. Soc. s1-41(1):673–679. DOI: 10.1112/jlms/s1-41.1.673.
- Berstel, J. (1979). Transductions and Context-Free Languages. Stuttgart: Teubner.
- Bridson, M., Haefliger, A. (1999). Metric Spaces of Non-positive Curvature. Grundlehren Math. Wiss, Vol. 319. Berlin: Springer.
- Bridson, M., Howie, J., Miller, C., Short, H. (2013). On the finite presentation of subdirect products and the nature of residually free groups. Am. J. Math. 135(4):891–933. DOI: 10.1353/ajm.2013.0036.
- D’Angeli, D., Rodaro, E. (2016). Freeness of automaton groups vs boundary dynamics. J. Algebra 462:115–136. DOI: 10.1016/j.jalgebra.2016.05.015.
- D’Angeli, D., Rodaro, E. (2018). Fragile words and Cayley type producers. Int. J. Group Theory 7(3):91–109.
- D’Angeli, D., Rodaro, E. (2020). Automaton semigroups and groups: on the undecidability of problems related to freeness and finiteness. Isr. J. Math. DOI:10.1007/s11856-020-1972-5.
- de Luca, A., Varricchio, S. (1992). On finitely recognizable semigroups. Acta Informatica. 29(5):483–498. DOI: 10.1007/BF01193579.
- Demaine, E. D., Demaine, M. L., Minsky, Y. N., Mitchell, J. S. B., Rivest, R. L., Pǎtraşcu, M. (2014). Picture-hanging puzzles. Theory Comput. Syst. 54(4):531–550. DOI: 10.1007/s00224-013-9501-0.
- Donno, A., D’Angeli, D., Rodaro, E. (2020). Catalan fragile words. Int. J. Group Theory 9(2):69–80. DOI: 10.22108/IJGT.2019.113180.1506.
- Gartside, P., Greenwood, S. (2007). Brunnian links. Fund. Math. 193(3):259–276. DOI: 10.4064/fm193-3-3.
- Hopcroft, J. E., Ullman, J. D. (1979). Introduction to Automata Theory. Languages, and Computation. Reading, MA: Addison-Wesley.
- Kapovich, I., Myasnikov, A. (2002). Stallings foldings and the subgroup structure of free groups. J. Algebra 248(2):608–668. DOI: 10.1006/jabr.2001.9033.
- Lawson, M. V. (1998). Inverse Semigroups: The Theory of Partial Symmetries. Singapore: World Scientific.
- Margolis, S. W., Meakin, J., Sunik, Z. (2005). Distortion functions and the membership problem for submonoids of groups and monoids. Contemp. Math. 375:109–129.
- Mihailova, K. A. (1966). The occurrence problem for direct products of groups. Math. USSR Sbornik. 70(112):241–251.
- Munn, W. D. (1974). Free inverse semigroups. Proc. Lond. Math. Soc. 30:384–404.
- Sakarovitch, J. (2009). Elements of Automata Theory. Cambridge, UK: Cambridge University Press.
- Stephen, J. B. (1990). Presentations of inverse monoids. J. Pure Appl. Algebra 198(81):81–112. DOI: 10.1016/0022-4049(90)90057-O.
- Stephen, J. B. (1998). Amalgamated free products of inverse semigroups. J. Algebra 208(2):399–424. DOI: 10.1006/jabr.1998.7501.