@article{SF_1970__1_133778,
     author = {W.D. Munn},
     title = {On simple inverse semigroups.},
     journal = {Semigroup forum},
     pages = {63--74},
     publisher = {mathdoc},
     volume = {1},
     year = {1970},
     zbl = {0218.20052},
     url = {http://geodesic.mathdoc.fr/item/SF_1970__1_133778/}
}