@article{SF_1993__47_2_135255,
     author = {A. Kleppner},
     title = {Multipliers on subsemigroups of locally compact abelian groups.},
     journal = {Semigroup forum},
     pages = {81--86},
     publisher = {mathdoc},
     volume = {47},
     number = {2},
     year = {1993},
     zbl = {0793.43003},
     url = {http://geodesic.mathdoc.fr/item/SF_1993__47_2_135255/}
}