%0 Journal Article %A Šimša, Jaromír %T Some converse theorems in the asymptotic theory of ordinary differential equations %J Czechoslovak Mathematical Journal %D 1988 %P 425-433 %V 38 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1988.102238/ %R 10.21136/CMJ.1988.102238 %G en %F 10_21136_CMJ_1988_102238