@article{GDZPPN00126284X, title = {Homomorphisms of sandwich semigroups and sandwich near-rings.}, journal = {Semigroup forum}, volume = {46}, year = {1993}, pages = {168-181}, zbl = {0805.20060}, url = {http://dml.mathdoc.fr/item/GDZPPN00126284X} }
Magill, K.D. jr.; Misra, P.R. Homomorphisms of sandwich semigroups and sandwich near-rings.. Semigroup forum, Tome 46 (1993) pp. 168-181. http://gdmltest.u-ga.fr/item/GDZPPN00126284X/