@article{SF_1980__20_134414,
     author = {V.P. Diodato},
     title = {Semigroup literature.},
     journal = {Semigroup forum},
     pages = {187--188},
     publisher = {mathdoc},
     volume = {20},
     year = {1980},
     url = {http://geodesic.mathdoc.fr/item/SF_1980__20_134414/}
}