%0 Journal Article
%T Nonlinear Systems: Asymptotic Methods, Stability, Chaos, Control, and Optimization
%A Geraldo Nunes Silva
%A Maria do Ros¨¢rio de Pinho
%A Marco Antonio Teixeira
%A Marcelo Messias
%A Elbert Macau
%J Mathematical Problems in Engineering
%D 2011
%I Hindawi Publishing Corporation
%R 10.1155/2011/498751
%U http://www.hindawi.com/journals/mpe/2011/498751/