TY  - JOUR
AU  - Walter Ledermann
TI  - An arithmetical property of quadratic forms.
JO  - Commentarii mathematici Helvetici
PY  - 1959
SP  - 34
EP  - 37
VL  - 33
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMH_1959__33_139160/
ID  - CMH_1959__33_139160
ER  -