@article{2188,
author = {Ellis, David},
title = {An algebraic characterization of lattices among semilattices},
journal = {Portugaliae mathematica},
volume = {8},
year = {1949},
pages = {103-106},
zbl = {0038.02101},
mrnumber = {0036745},
language = {en},
url = {http://dml.mathdoc.fr/item/2188}
}
Ellis, David. An algebraic characterization of lattices among semilattices. Portugaliae mathematica, Tome 8 (1949) pp. 103-106. http://gdmltest.u-ga.fr/item/2188/