@article{GDZPPN001262955,
title = {Range sets and partition sets in connection with congruences and algebraic invariants.},
journal = {Semigroup forum},
volume = {46},
year = {1993},
pages = {285-293},
zbl = {0783.20036},
url = {http://dml.mathdoc.fr/item/GDZPPN001262955}
}
Levi, I.; Seif, S. Range sets and partition sets in connection with congruences and algebraic invariants.. Semigroup forum, Tome 46 (1993) pp. 285-293. http://gdmltest.u-ga.fr/item/GDZPPN001262955/