@article{SF_1984__30_134719,
     author = {B.M. Schein and L. Li},
     title = {Ordered sets which support inverse semigroups :  {Three} examples.},
     journal = {Semigroup forum},
     pages = {234--236},
     publisher = {mathdoc},
     volume = {30},
     year = {1984},
     zbl = {0549.06007},
     url = {http://geodesic.mathdoc.fr/item/SF_1984__30_134719/}
}