@article{GDZPPN001253980, title = {Topological semilattices with enough closed subsemilattices to separate points.}, journal = {Semigroup forum}, volume = {20}, year = {1980}, pages = {49-54}, zbl = {0435.22005}, url = {http://dml.mathdoc.fr/item/GDZPPN001253980} }
Stepp, W. Topological semilattices with enough closed subsemilattices to separate points.. Semigroup forum, Tome 20 (1980) pp. 49-54. http://gdmltest.u-ga.fr/item/GDZPPN001253980/