@article{SF_1982__24_134546,
     author = {K. Shoji},
     title = {Note on self-injective non-singular semigroups.},
     journal = {Semigroup forum},
     pages = {189--194},
     publisher = {mathdoc},
     volume = {24},
     year = {1982},
     zbl = {0502.20036},
     url = {http://geodesic.mathdoc.fr/item/SF_1982__24_134546/}
}