@article{DAN_1961_140_1_a2,
     author = {V. A. Gaukhman},
     title = {The geometry of a second-order ordinary differential equation with respect to a conformal group of transformations in two variables},
     journal = {Doklady Akademii Nauk},
     pages = {15--18},
     publisher = {mathdoc},
     volume = {140},
     number = {1},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_140_1_a2/}
}