References
- Cameron, P. J., Gadouleau, M., Mitchell, J. D., Peresse, Y. (2017). Chains of subsemigroups. Israel J. Math. 220(1):479–508. DOI: 10.1007/s11856-017-1523-x.
- Conway, J. B., Duncan, J., Paterson, A. L. T. (1984). Monogenic inverse semigroups and their C*- algebras. Proc. Royal Soc. Edinburgh: Sec. A Math. 98(1–2):13–24. DOI: 10.1017/S030821050002552X.
- Distler, A., Jefferson, C., Kelsey, T., Kotthoff, L. (2012). The semigroups of order 10. In: Milano, M. ed. Principles and Practice of Constraint Programming. Berlin, Heidelberg: Springer, pp. 883–899.
- Dyadchenko, G. G. (1984). Structure of monogenic inverse semigroups. J. Sov. Math. 24(4):428–434. DOI: 10.1007/BF01094373.
- East, J., Egri-Nagy, A., Mitchell, J. D. (2017). Enumerating transformation semigroups. Semigroup Forum 95(1): 109–125. DOI: 10.1007/s00233-017-9869-2.
- Holt, D. F. (2010). Enumerating subgroups of the symmetric group. In: Computational Group Theory and the Theory of Groups, II. Vol. 511. Contemporary Mathematics. Providence, RI: American Mathematical Society, pp. 33–37. DOI: 10.1090/conm/511/10041.
- Munn, W. D. (1974). Free inverse semigroups. In: Proc. London Math. Soc. s3-29(3):385–404. DOI: 10.1112/plms/s3-29.3.385.
- Preston, G. B. (1986). Monogenic inverse semigroups. J. Austral. Math. Soc. Ser. A 40(3):321–342. DOI: 10.1017/S1446788700027543.
- Pyber, L. (1993). Enumerating finite groups of given order. Ann. Math. (2) 137(1):203–220. DOI: 10.2307/2946623.
- Russell, C. (2021). Enumerating 0-simple semigroups. DOI: 10.17630/STA/109.https://research-repository.st-andrews.ac.uk/handle/10023/23558.
- Sloane, N. J. A. (2023). Sequence A009490. In: The On-Line Encyclopedia of Integer Sequences. OEIS Foundation Inc. http://oeis.org/A009490.