@article{GDZPPN001248332,
title = {The kernel of the wreath product of semigroups.},
journal = {Semigroup forum},
volume = {4},
year = {1972},
pages = {232-236},
zbl = {0274.20083},
url = {http://dml.mathdoc.fr/item/GDZPPN001248332}
}
McKnight, J.D.; Sadowski, E. The kernel of the wreath product of semigroups.. Semigroup forum, Tome 4 (1972) pp. 232-236. http://gdmltest.u-ga.fr/item/GDZPPN001248332/