@article{MZ_1973__130_171860,
     author = {Joseph L. Zemmer},
     title = {Valuation {Near-Rings.}},
     journal = {Mathematische Zeitschrift},
     pages = {175--188},
     year = {1973},
     volume = {130},
     zbl = {0238.16026},
     url = {http://geodesic.mathdoc.fr/item/MZ_1973__130_171860/}
}