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@article{SF_1977__15_134268, author = {J. F. Bergland and H.D. Junghenn and P. Milnes}, title = {Universal mapping properties of semigroup compactifications.}, journal = {Semigroup forum}, pages = {375--386}, publisher = {mathdoc}, volume = {15}, year = {1977}, zbl = {0391.22005}, url = {http://geodesic.mathdoc.fr/item/SF_1977__15_134268/} }
J. F. Bergland; H.D. Junghenn; P. Milnes. Universal mapping properties of semigroup compactifications.. Semigroup forum, Tome 15 (1977), pp. 375-386. http://geodesic.mathdoc.fr/item/SF_1977__15_134268/