@article{SF_1986__34_134842,
     author = {S.L. Lipscomb},
     title = {Cyclic subsemigroups of symmetric inverse semigroups.},
     journal = {Semigroup forum},
     pages = {243--248},
     publisher = {mathdoc},
     volume = {34},
     year = {1986},
     zbl = {0605.20061},
     url = {http://geodesic.mathdoc.fr/item/SF_1986__34_134842/}
}