@article{1103038073,
author = {Koch, R. J.},
title = {Ordered semigroups in partially ordered semigroups.},
journal = {Pacific J. Math.},
volume = {10},
number = {4},
year = {1960},
pages = { 1333-1336},
language = {en},
url = {http://dml.mathdoc.fr/item/1103038073}
}
Koch, R. J. Ordered semigroups in partially ordered semigroups.. Pacific J. Math., Tome 10 (1960) no. 4, pp. 1333-1336. http://gdmltest.u-ga.fr/item/1103038073/