%0 Journal Article %A P. V. Bibikov %T On Lie’s problem and differential invariants of ODEs $y''=F(x,y)$ %J Funkcionalʹnyj analiz i ego priloženiâ %D 2017 %P 16-25 %V 51 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_2017_51_4_a1/ %G ru %F FAA_2017_51_4_a1