@article{1256052710,
author = {Conrad, P. F. and Diem, J. E.},
title = {The ring of polar preserving endomorphisms of an abelian lattice-ordered group},
journal = {Illinois J. Math.},
volume = {15},
number = {4},
year = {1971},
pages = { 222-240},
language = {en},
url = {http://dml.mathdoc.fr/item/1256052710}
}
Conrad, P. F.; Diem, J. E. The ring of polar preserving endomorphisms of an abelian lattice-ordered group. Illinois J. Math., Tome 15 (1971) no. 4, pp. 222-240. http://gdmltest.u-ga.fr/item/1256052710/