%0 Journal Article %A Čadek, Martin %T A note to pointwise transformations of linear quasi-differential equations %J Archivum mathematicum %D 1990 %P 27-35 %V 26 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_1990__26_1_a3/ %G en %F ARM_1990__26_1_a3