@article{GDZPPN001253131,
title = {The Maak compactification of a dense subsemigroup.},
journal = {Semigroup forum},
volume = {18},
year = {1979},
pages = {261-266},
zbl = {0416.22003},
url = {http://dml.mathdoc.fr/item/GDZPPN001253131}
}
Junghenn, H.D. The Maak compactification of a dense subsemigroup.. Semigroup forum, Tome 18 (1979) pp. 261-266. http://gdmltest.u-ga.fr/item/GDZPPN001253131/