@article{GDZPPN001251236,
title = {Multiplication semigroups II.},
journal = {Semigroup forum},
volume = {12},
year = {1976},
pages = {145-164},
zbl = {0343.20031},
url = {http://dml.mathdoc.fr/item/GDZPPN001251236}
}
Mannepalli, V. L. Multiplication semigroups II.. Semigroup forum, Tome 12 (1976) pp. 145-164. http://gdmltest.u-ga.fr/item/GDZPPN001251236/