@article{GDZPPN001252577,
title = {Tietze's convexity theorey for lattices and semilattices.},
journal = {Semigroup forum},
volume = {14},
year = {1977},
pages = {357-374},
language = {en},
url = {http://dml.mathdoc.fr/item/GDZPPN001252577}
}
Jamison, R. E. Tietze's convexity theorey for lattices and semilattices.. Semigroup forum, Tome 14 (1977) pp. 357-374. http://gdmltest.u-ga.fr/item/GDZPPN001252577/