@article{MAN_1925__94_159104,
     author = {H. Brandt},
     title = {Die {Hauptklassen} in der {Kompositionstheorie} der quatern\"aren quadratischen {Formen}},
     journal = {Mathematische Annalen},
     pages = {166--175},
     publisher = {mathdoc},
     volume = {94},
     year = {1925},
     zbl = {51.0130.10},
     url = {http://geodesic.mathdoc.fr/item/MAN_1925__94_159104/}
}