%0 Journal Article %A Fečkan, Michal %T Invariant curves from symmetry %J Mathematica Bohemica %D 1993 %P 171-174 %V 118 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/MB.1993.126048/ %R 10.21136/MB.1993.126048 %G en %F 10_21136_MB_1993_126048