%0 Journal Article %A A. V. Pukhlikov %T Birational geometry of singular Fano double spaces of index two %J Sbornik. Mathematics %D 2021 %P 551-566 %V 212 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2021_212_4_a5/ %G en %F SM_2021_212_4_a5