@article{GDZPPN001256556,
title = {ndependence of axioms for biordered sets.},
journal = {Semigroup forum},
volume = {30},
year = {1984},
pages = {249-264},
zbl = {0533.20028},
url = {http://dml.mathdoc.fr/item/GDZPPN001256556}
}
Premchand, S. ndependence of axioms for biordered sets.. Semigroup forum, Tome 30 (1984) pp. 249-264. http://gdmltest.u-ga.fr/item/GDZPPN001256556/