%0 Journal Article %A Hájek, Otomar %T Sections of dynamical systems in $E^2$ %J Czechoslovak Mathematical Journal %D 1965 %P 205-211 %V 15 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1965.100662/ %R 10.21136/CMJ.1965.100662 %G en %F 10_21136_CMJ_1965_100662