@article{SF_1988__37_1_134931,
     author = {Hing Leung},
     title = {On the topological structure of a finitely generated semigroup of matrices.},
     journal = {Semigroup forum},
     pages = {273--288},
     publisher = {mathdoc},
     volume = {37},
     number = {1},
     year = {1988},
     zbl = {0646.20056},
     url = {http://geodesic.mathdoc.fr/item/SF_1988__37_1_134931/}
}