%0 Journal Article %A Karim, Rahmi Ibrahim Ibrahim Abdel %T On the behaviour of the solutions and their first $(n-1)$ derivatives of the $n$-th order differential equations with periodic coefficients %J Archivum mathematicum %D 1970 %P 237-249 %V 6 %N 4 %U http://geodesic.mathdoc.fr/item/ARM_1970_6_4_a5/ %G en %F ARM_1970_6_4_a5