@article{MZ_1957__67_169684,
     author = {Rudolf Schauffler},
     title = {Die {Assoziativit\"at} im {Ganzen,} besonders bei {Quasigruppen.}},
     journal = {Mathematische Zeitschrift},
     pages = {428--435},
     publisher = {mathdoc},
     volume = {67},
     year = {1957},
     zbl = {0077.24703},
     url = {http://geodesic.mathdoc.fr/item/MZ_1957__67_169684/}
}