%0 Journal Article
%A L. V. Ovsyannikov
%T Determination of the group of a linear second-order differential equation
%J Doklady Akademii Nauk
%D 1960
%P 44-47
%V 132
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1960_132_1_a9/
%G ru
%F DAN_1960_132_1_a9