%0 Journal Article
%A Gleb E. Smirnov
%T Focus-focus singularities in classical mechanics
%J Russian journal of nonlinear dynamics
%D 2014
%P 101-112
%V 10
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ND_2014_10_1_a6/
%G ru
%F ND_2014_10_1_a6