%0 Journal Article %A A. F. Izé %T Lyapunov numbers for a countable system of ordinary differential equations %J Annales Polonici Mathematici %D 1990 %P 167-178 %V 51 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-51-1-167-178/ %R 10.4064/ap-51-1-167-178 %G en %F 10_4064_ap_51_1_167_178