@article{BAG_1988__26_138396,
     author = {O. STEINFELD and T. Th. Thang},
     title = {Remarks on canonical quasi-ideals in semigroups},
     journal = {Beitr\"age zur Algebra und Geometrie},
     pages = {127--136},
     publisher = {mathdoc},
     volume = {26},
     year = {1988},
     url = {http://geodesic.mathdoc.fr/item/BAG_1988__26_138396/}
}