@article{GDZPPN00126169X,
title = {Magnifying elements in semigroups.},
journal = {Semigroup forum},
volume = {44},
year = {1992},
pages = {314-319},
zbl = {0746.20035},
url = {http://dml.mathdoc.fr/item/GDZPPN00126169X}
}
Catino, F.; Migliorini, F. Magnifying elements in semigroups.. Semigroup forum, Tome 44 (1992) pp. 314-319. http://gdmltest.u-ga.fr/item/GDZPPN00126169X/