%0 Journal Article
%A A. T. Fomenko
%T The topology of surfaces of constant energy in integrable Hamiltonian systems, and obstructions to integrability
%J Izvestiya. Mathematics 
%D 1987
%P 629-658
%V 29
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1987_29_3_a6/
%G en
%F IM2_1987_29_3_a6