%0 Journal Article %A M. M. Grinenko %T New Mori structures on a~double space of index~2 %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2004 %P 573-574 %V 59 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_2004_59_3_a12/ %G en %F RM_2004_59_3_a12