TY  - JOUR
AU  - P. P. Tammela
TI  - On the theory of the reduction of positive quadratic forms. Abnormality of the partition of the positivity cone into the Minkowski $(n\geqslant7)$ and Barns--Cohn reduction regions $(n=4)$.
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1986
SP  - 125
EP  - 134
VL  - 151
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1986_151_a12/
LA  - ru
ID  - ZNSL_1986_151_a12
ER  -