@article{SF_1976__13_134199,
     author = {W. Crawley},
     title = {A note on epimorphisms of compact {Lawson} semilattices.},
     journal = {Semigroup forum},
     pages = {92--94},
     publisher = {mathdoc},
     volume = {13},
     year = {1976},
     zbl = {0345.06004},
     url = {http://geodesic.mathdoc.fr/item/SF_1976__13_134199/}
}