%0 Journal Article %A V. A. Gaukhman %T The geometry of a second-order ordinary differential equation with respect to a conformal group of transformations in two variables %J Doklady Akademii Nauk %D 1961 %P 15-18 %V 140 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_140_1_a2/ %G ru %F DAN_1961_140_1_a2