%0 Journal Article
%A M. B. Sevryuk
%T Invariant tori of Hamiltonian systems that are nondegenerate in R\"ussmann’s sense
%J Doklady Akademii Nauk
%D 1996
%P 590-593
%V 346
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1996_346_5_a2/
%G ru
%F DAN_1996_346_5_a2