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@article{MZ_1971__123_171632, author = {Michael Friedberg}, title = {Homomorphisms of {Divisible} {Semigroups.}}, journal = {Mathematische Zeitschrift}, pages = {215--218}, publisher = {mathdoc}, volume = {123}, year = {1971}, zbl = {0221.20084}, url = {http://geodesic.mathdoc.fr/item/MZ_1971__123_171632/} }
Michael Friedberg. Homomorphisms of Divisible Semigroups.. Mathematische Zeitschrift, Tome 123 (1971), pp. 215-218. http://geodesic.mathdoc.fr/item/MZ_1971__123_171632/