TY  - JOUR
AU  - S. M. L'vovskii
TI  - On the extension of varieties defined by quadratic equations
JO  - Sbornik. Mathematics
PY  - 1989
SP  - 305
EP  - 317
VL  - 63
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1989_63_2_a2/
LA  - en
ID  - SM_1989_63_2_a2
ER  -