%0 Journal Article %A V. S. Levchenkov %T Choice based on tournament relations %J Doklady Akademii Nauk %D 1994 %P 324-327 %V 336 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1994_336_3_a9/ %G ru %F DAN_1994_336_3_a9