@article{GDZPPN001252585, title = {Universal mapping properties of semigroup compactifications.}, journal = {Semigroup forum}, volume = {14}, year = {1977}, pages = {375-386}, zbl = {0391.22005}, url = {http://dml.mathdoc.fr/item/GDZPPN001252585} }
Bergland, J. F.; Junghenn, H.D.; Milnes, P. Universal mapping properties of semigroup compactifications.. Semigroup forum, Tome 14 (1977) pp. 375-386. http://gdmltest.u-ga.fr/item/GDZPPN001252585/