@article{10_1017_S0017089500030706,
     author = {Blyth, T. S. and Giraldes, Em{\'\i}lia and Marques-Smith, M. Paula O.},
     title = {Associate subgroups of orthodox semigroups},
     journal = {Glasgow mathematical journal},
     pages = {163--171},
     year = {1994},
     volume = {36},
     number = {2},
     doi = {10.1017/S0017089500030706},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500030706/}
}