@article{MZ_1969__109_171140,
     author = {Holger Petersson},
     title = {Eine {Identit\"at} f\"unften {Grades,} der gewisse {Isotope} von {Kompositions-Algebren} gen\"ugen.},
     journal = {Mathematische Zeitschrift},
     pages = {217--238},
     publisher = {mathdoc},
     volume = {109},
     year = {1969},
     zbl = {0175.02701},
     url = {http://geodesic.mathdoc.fr/item/MZ_1969__109_171140/}
}