@article{SF_1974__8_134029,
     author = {G\'erard Lallement},
     title = {A note on congruences on {Rees} matrix semigroups.},
     journal = {Semigroup forum},
     pages = {89--92},
     publisher = {mathdoc},
     volume = {8},
     year = {1974},
     zbl = {0287.20054},
     url = {http://geodesic.mathdoc.fr/item/SF_1974__8_134029/}
}