@article{10_1017_S0017089500005036,
     author = {Blyth, T. S. and McFadden, R.},
     title = {Unit orthodox semigroups},
     journal = {Glasgow mathematical journal},
     pages = {39--42},
     year = {1983},
     volume = {24},
     number = {1},
     doi = {10.1017/S0017089500005036},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500005036/}
}