%0 Journal Article %A R. N. Ganikhodzhaev %T Quadratic stochastic operators, Lyapunov functions, and tournaments %J Sbornik. Mathematics %D 1993 %P 489-506 %V 76 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1993_76_2_a11/ %G en %F SM_1993_76_2_a11