@article{SF_1993__47_2_135267,
     author = {K.D. jr. Magill and P.R. Misra},
     title = {Homomorphisms of sandwich semigroups and sandwich near-rings.},
     journal = {Semigroup forum},
     pages = {168--181},
     publisher = {mathdoc},
     volume = {47},
     number = {2},
     year = {1993},
     zbl = {0805.20060},
     url = {http://geodesic.mathdoc.fr/item/SF_1993__47_2_135267/}
}