TY  - JOUR
AU  - N. A. Karpenko
TI  - Algebro-geometric invariants of quadratic forms
JO  - Algebra i analiz
PY  - 1990
SP  - 141
EP  - 162
VL  - 2
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AA_1990_2_1_a4/
LA  - ru
ID  - AA_1990_2_1_a4
ER  -