On congruences of ...x-normal semigroups.
Levi, I. ; Seif, S.
Semigroup forum, Tome 43 (1991), p. 93-114 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1991-01-01
EUDML-ID : urn:eudml:doc:135099 
@article{GDZPPN001261134,
     title = {On congruences of  ...x-normal semigroups.},
     journal = {Semigroup forum},
     volume = {43},
     year = {1991},
     pages = {93-114},
     zbl = {0727.20043},
     url = {http://dml.mathdoc.fr/item/GDZPPN001261134}
}

Levi, I.; Seif, S. On congruences of  ...x-normal semigroups.. Semigroup forum, Tome 43 (1991) pp. 93-114. http://gdmltest.u-ga.fr/item/GDZPPN001261134/