[4] R. P. Sullivan:
Semi-automorphisms of transformation semigroups. Czech. Math. J. 33 (108) (1983), 548-554.
MR 0721086 |
Zbl 0537.20037
[5] J. S. V. Symons: Automorphisms of transformation semigroups. Ph.D. Thesis, University of Western Australia, 1973.