@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/}
}