@article{GDZPPN001248316,
title = {On semigroups in which every Rees one-sided congruence is a congruence.},
journal = {Semigroup forum},
volume = {4},
year = {1972},
pages = {215-223},
zbl = {0265.20058},
url = {http://dml.mathdoc.fr/item/GDZPPN001248316}
}
Baird, G.R.; Thierrin, G. On semigroups in which every Rees one-sided congruence is a congruence.. Semigroup forum, Tome 4 (1972) pp. 215-223. http://gdmltest.u-ga.fr/item/GDZPPN001248316/