%0 Journal Article %A Żołądek, Henryk %T Book reviews: ''Limit cycles of differential equations'' by Colin Christopher and Chengzhi Li %J Control and Cybernetics %D 2008 %P 231-236 %V 37 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/CC_2008_37_1_a11/ %G en %F CC_2008_37_1_a11