%0 Journal Article
%A V. A. Pliss
%T Stability of motion in the doubtful case of two zero roots
%J Doklady Akademii Nauk
%D 1964
%P 268-270
%V 154
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1964_154_2_a6/
%G ru
%F DAN_1964_154_2_a6