%0 Journal Article %A L. Erbe %T Stability and periodicity for linear differential equations with periodic coefficients %J Annales Polonici Mathematici %D 1975 %P 131-140 %V 31 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-31-2-131-140/ %R 10.4064/ap-31-2-131-140 %G en %F 10_4064_ap_31_2_131_140