@article{10_21136_CMJ_1983_101912,
     author = {Sullivan, Robert P.},
     title = {Semi-automorphisms of transformation semigroups},
     journal = {Czechoslovak Mathematical Journal},
     pages = {548--554},
     publisher = {mathdoc},
     volume = {33},
     number = {4},
     year = {1983},
     doi = {10.21136/CMJ.1983.101912},
     mrnumber = {721086},
     zbl = {0537.20037},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1983.101912/}
}