@article{120117,
author = {Ji\v r\'\i\ Rach\r unek},
title = {A characterization of ordered groups by means of segments},
journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
volume = {21},
year = {1982},
pages = {33-35},
zbl = {0524.06030},
mrnumber = {0702605},
language = {en},
url = {http://dml.mathdoc.fr/item/120117}
}
Rachůnek, Jiří. A characterization of ordered groups by means of segments. Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, Tome 21 (1982) pp. 33-35. http://gdmltest.u-ga.fr/item/120117/
Partially ordered algebraic systems, (Russian ed.), Moscow 1965. (1965) | MR 0218283
On extensions of orders of groups and rings, Acta Math. Acad. Sci. Hung., 28 (1976), 37-40. (1976) | MR 0419329