%0 Journal Article %A Neuman, FrantiĊĦek %T On Halphen and Laguerre-Forsyth canonical forms of linear differential equations %J Archivum mathematicum %D 1990 %P 147-154 %V 26 %N 2-3 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_1990__26_2-3_a11/ %G en %F ARM_1990__26_2-3_a11