TY  - JOUR
AU  - V. A. Alexeev
TI  - Rationality conditions for three-dimensional varieties with sheaf of Del Pezzo surfaces of degree~4
JO  - Matematičeskie zametki
PY  - 1987
SP  - 724
EP  - 730
VL  - 41
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1987_41_5_a10/
LA  - ru
ID  - MZM_1987_41_5_a10
ER  -