@article{GDZPPN001251708,
title = {On exposed semigroup homomorphisms.},
journal = {Semigroup forum},
volume = {12},
year = {1976},
pages = {189-204},
zbl = {0355.20072},
url = {http://dml.mathdoc.fr/item/GDZPPN001251708}
}
Fuchssteiner, B. On exposed semigroup homomorphisms.. Semigroup forum, Tome 12 (1976) pp. 189-204. http://gdmltest.u-ga.fr/item/GDZPPN001251708/