@article{MZ_1955__62_169508,
     author = {Eberhard Schieferdecker},
     title = {Zur {Einbettung} metrischer {Halbgruppen} in ihre {Quotientenhalbgruppen.}},
     journal = {Mathematische Zeitschrift},
     pages = {443--468},
     publisher = {mathdoc},
     volume = {62},
     year = {1955},
     zbl = {0065.00801},
     url = {http://geodesic.mathdoc.fr/item/MZ_1955__62_169508/}
}