@article{GDZPPN001250639,
title = {On separation properties in semilattices.},
journal = {Semigroup forum},
volume = {11},
year = {1975},
pages = {220-228},
zbl = {0299.06002},
url = {http://dml.mathdoc.fr/item/GDZPPN001250639}
}
Varlet, J.C. On separation properties in semilattices.. Semigroup forum, Tome 11 (1975) pp. 220-228. http://gdmltest.u-ga.fr/item/GDZPPN001250639/