@article{SF_1987__36_134894,
     author = {B.M. Schein},
     title = {Noble inverse semigroups with bisimple core.},
     journal = {Semigroup forum},
     pages = {175--178},
     year = {1987},
     volume = {36},
     zbl = {0625.20053},
     url = {http://geodesic.mathdoc.fr/item/SF_1987__36_134894/}
}