@article{urn:eudml:doc:43882,
title = {Characterization of all order relations in direct sums of ordered groups.},
journal = {Collectanea Mathematica},
volume = {23},
year = {1972},
pages = {85-90},
zbl = {0275.06020},
language = {en},
url = {http://dml.mathdoc.fr/item/urn:eudml:doc:43882}
}
Pilz, Günter F. Characterization of all order relations in direct sums of ordered groups.. Collectanea Mathematica, Tome 23 (1972) pp. 85-90. http://gdmltest.u-ga.fr/item/urn:eudml:doc:43882/