%0 Journal Article
%A Andres, Ján
%T Symmetry in a certain simply perturbed Hamiltonian system
%J Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
%D 1987
%P 131-138
%V 26
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AUPO_1987__26_1_a7/
%G en
%F AUPO_1987__26_1_a7