@article{SF_1984__30_134730,
     author = {J. Brinckmann},
     title = {On the least separative congruence on a semigroup.},
     journal = {Semigroup forum},
     pages = {365--370},
     publisher = {mathdoc},
     volume = {30},
     year = {1984},
     zbl = {0535.20038},
     url = {http://geodesic.mathdoc.fr/item/SF_1984__30_134730/}
}