@article{GDZPPN001252461,
title = {Congruence lattices of Rees matrix semigroups.},
journal = {Semigroup forum},
volume = {14},
year = {1977},
pages = {247-262},
zbl = {0379.06005},
url = {http://dml.mathdoc.fr/item/GDZPPN001252461}
}
Johnston, K. G. Congruence lattices of Rees matrix semigroups.. Semigroup forum, Tome 14 (1977) pp. 247-262. http://gdmltest.u-ga.fr/item/GDZPPN001252461/