@article{SF_1972__5_133933,
     author = {C.J. Maxson},
     title = {(0,1) - {Matrices} and semigroups of ring endomorphisms.},
     journal = {Semigroup forum},
     pages = {160--166},
     publisher = {mathdoc},
     volume = {5},
     year = {1972},
     zbl = {0259.20062},
     url = {http://geodesic.mathdoc.fr/item/SF_1972__5_133933/}
}