@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/