Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{SF_1976__12_134166, author = {V. L. Mannepalli}, title = {Multiplication semigroups {II.}}, journal = {Semigroup forum}, pages = {145--164}, publisher = {mathdoc}, volume = {12}, year = {1976}, zbl = {0343.20031}, url = {http://geodesic.mathdoc.fr/item/SF_1976__12_134166/} }
V. L. Mannepalli. Multiplication semigroups II.. Semigroup forum, Tome 12 (1976), pp. 145-164. http://geodesic.mathdoc.fr/item/SF_1976__12_134166/