@article{GDZPPN001262297,
title = {Commutative semigroups which are embeddable into epigroups.},
journal = {Semigroup forum},
volume = {46},
year = {1993},
pages = {78-84},
zbl = {0805.20056},
url = {http://dml.mathdoc.fr/item/GDZPPN001262297}
}
Tretjakova, E.G. Commutative semigroups which are embeddable into epigroups.. Semigroup forum, Tome 46 (1993) pp. 78-84. http://gdmltest.u-ga.fr/item/GDZPPN001262297/