@article{SF_1972__5_133945,
     author = {G.R. Baird},
     title = {On 0-simple semigroups.},
     journal = {Semigroup forum},
     pages = {270--272},
     publisher = {mathdoc},
     volume = {5},
     year = {1972},
     zbl = {0265.20050},
     url = {http://geodesic.mathdoc.fr/item/SF_1972__5_133945/}
}