%0 Journal Article %A Ĺ eda, Valter %T Some classes of linear $n$th-order differential equations %J Archivum mathematicum %D 1997 %P 157-165 %V 33 %N 1-2 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_1997__33_1-2_a16/ %G en %F ARM_1997__33_1-2_a16