%0 Journal Article %A G. Czichowski %T Geometrical Aspects of SL(2)-Invariant Second Order Ordinary Differential Equations %J Journal of Lie Theory %D 1993 %P 231-238 %V 3 %N 2 %U https://jolt.centre-mersenne.org/articles/10.5802/jolt.68/ %R 10.5802/jolt.68 %F JOLT_1993_3_2_a6