@article{FAA_2017_51_4_a1,
     author = {P. V. Bibikov},
     title = {On {Lie{\textquoteright}s} problem and differential invariants of {ODEs} $y''=F(x,y)$},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {16--25},
     publisher = {mathdoc},
     volume = {51},
     number = {4},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_2017_51_4_a1/}
}