%0 Journal Article %A L. E. Evtushik %T Non-Euclidean geometries based on higher-order ordinary differential systems %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1994 %P 86-98 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1994_2_a12/ %G ru %F VMUMM_1994_2_a12