%0 Journal Article
%A M. B. Sevryuk
%T On~invariant tori of reversible systems in the neighbourhood of an equilibrium position
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1987
%P 147-148
%V 42
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1987_42_4_a7/
%G en
%F RM_1987_42_4_a7