@article{SF_1988__37_1_134929,
     author = {G.I. Maschevitzky},
     title = {Completely simple and completely 0-simple identities.},
     journal = {Semigroup forum},
     pages = {253--264},
     year = {1988},
     volume = {37},
     number = {1},
     zbl = {0648.20058},
     url = {http://geodesic.mathdoc.fr/item/SF_1988__37_1_134929/}
}