%0 Journal Article %A Jarník, Jiří %A Kurzweil, Jaroslav %T Sets of solutions of differential relations %J Czechoslovak Mathematical Journal %D 1981 %P 554-568 %V 31 %N 4 %I mathdoc %U https://geodesic-test.mathdoc.fr/articles/10.21136/CMJ.1981.101773/ %R 10.21136/CMJ.1981.101773 %G en %F 10_21136_CMJ_1981_101773