%0 Journal Article %A V. A. Iskovskikh %T On Shokurov's Work Prelimiting Flips %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2003 %P 21-42 %V 240 %U http://geodesic.mathdoc.fr/item/TM_2003_240_a2/ %G ru %F TM_2003_240_a2