%0 Journal Article
%A S. L. Ziglin
%T The absence of an additional first integral in a problem of the
%J Doklady Akademii Nauk
%D 1987
%P 804-807
%V 292
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1987_292_4_a7/
%G ru
%F DAN_1987_292_4_a7