@article{02133899,
title = {Divisibility orders on semigroups. II.},
journal = {Mathematica Pannonica},
volume = {15},
year = {2004},
pages = {3-20},
zbl = {1064.20058},
language = {en},
url = {http://dml.mathdoc.fr/item/02133899}
}
Mitsch, H. Divisibility orders on semigroups. II.. Mathematica Pannonica, Tome 15 (2004) pp. 3-20. http://gdmltest.u-ga.fr/item/02133899/