@article{1102868218,
author = {Ball, Richard N.},
title = {Full convex $l$-subgroups and the existence of $a^*$-closures of lattice ordered groups.},
journal = {Pacific J. Math.},
volume = {61},
number = {2},
year = {1975},
pages = { 7-16},
language = {en},
url = {http://dml.mathdoc.fr/item/1102868218}
}
Ball, Richard N. Full convex $l$-subgroups and the existence of $a^*$-closures of lattice ordered groups.. Pacific J. Math., Tome 61 (1975) no. 2, pp. 7-16. http://gdmltest.u-ga.fr/item/1102868218/