%0 Journal Article
%A N. V. Stepanov
%T The geometry of two second-order ordinary differential equations
%J Doklady Akademii Nauk
%D 1961
%P 62-65
%V 140
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1961_140_1_a15/
%G ru
%F DAN_1961_140_1_a15