@article{GDZPPN00124888X,
title = {Errors in elements of compact semigroups.},
journal = {Semigroup forum},
volume = {4},
year = {1972},
pages = {285-322},
zbl = {0265.22004},
url = {http://dml.mathdoc.fr/item/GDZPPN00124888X}
}
Hofmann, K.H.; Mislove, M.; Carruth, J.H. Errors in elements of compact semigroups.. Semigroup forum, Tome 4 (1972) pp. 285-322. http://gdmltest.u-ga.fr/item/GDZPPN00124888X/