%0 Journal Article
%A V. A. Alexeev
%T Rationality conditions for three-dimensional varieties with sheaf of Del Pezzo surfaces of degree~4
%J Matematičeskie zametki
%D 1987
%P 724-730
%V 41
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1987_41_5_a10/
%G ru
%F MZM_1987_41_5_a10