@article{GDZPPN001260685, title = {F-disjunctive congruences and a generalization of monoids with length.}, journal = {Semigroup forum}, volume = {40}, year = {1990}, pages = {291-306}, zbl = {0703.20057}, url = {http://dml.mathdoc.fr/item/GDZPPN001260685} }
Reis, C.M. F-disjunctive congruences and a generalization of monoids with length.. Semigroup forum, Tome 40 (1990) pp. 291-306. http://gdmltest.u-ga.fr/item/GDZPPN001260685/