TY  - JOUR
AU  - Dragomir Z. Djokovic
TI  - Level of a Field and the Number of Square Classes.
JO  - Mathematische Zeitschrift
PY  - 1973
SP  - 267
EP  - 270
VL  - 135
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1973__135_172010/
ID  - MZ_1973__135_172010
ER  -