@article{GDZPPN001260561,
title = {Embedding any countable semigroups in a 2-generated congruence-free semigroup.},
journal = {Semigroup forum},
volume = {40},
year = {1990},
pages = {145-154},
zbl = {0702.20045},
url = {http://dml.mathdoc.fr/item/GDZPPN001260561}
}
Byleen, K. Embedding any countable semigroups in a 2-generated congruence-free semigroup.. Semigroup forum, Tome 40 (1990) pp. 145-154. http://gdmltest.u-ga.fr/item/GDZPPN001260561/