@article{10_1017_S0017089500002731,
     author = {Reilly, N. R. and Munn, W. D.},
     title = {E-unitary congruences on inverse semigroups},
     journal = {Glasgow mathematical journal},
     pages = {57--75},
     year = {1976},
     volume = {17},
     number = {1},
     doi = {10.1017/S0017089500002731},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500002731/}
}