@article{CMH_1970__45_139428,
     author = {Paul Hafner},
     title = {Zur {Berechnung} endlicher euklidischer {Defekte} in quadratischen {R\"aumen.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {135--151},
     publisher = {mathdoc},
     volume = {45},
     year = {1970},
     zbl = {0192.37203},
     url = {http://geodesic.mathdoc.fr/item/CMH_1970__45_139428/}
}