% Abstract Template for NEEDS 2007.
% Please do not use additional packages, definitions or macros. Keep it simple.
\documentclass[a4paper,12pt]{article}
\pagestyle{empty}
\usepackage{amssymb,amsmath}
\newcommand{\needstitle}[1]{\title{#1}}
\newcommand{\needsauthors}[1]{\author{#1}}
\newcommand{\needspresent}[1]{\underline{#1}}
\newcommand{\needsinstitution}[1]{$^{#1}$}
%%%%DO NOT EDIT ABOVE THIS LINE%%%%%%%%%%%%%%%%%%%
% Here you can write the title of the contribution
\needstitle{Title of Your Contribution}
% Here you should write the names of the authors, indicating (\with \needspresent{}) who is going
% to present the contribution. With the \needsinstitution{} commands you indicate the reference to the 
%institution of the author according to the list below.
\needsauthors{\needspresent{First Author}\needsinstitution{1,2} \and Second Author\needsinstitution{1}}
% Do not edit the following 2 lines
\begin{document}
\maketitle
% Here you should list the institutions of the authors of the contribution. 
%To refefer to them, use the \needsinstitution{x} command, where x stands 
%for the order of the institution in the list below. You can add as many items as necessary
\begin{enumerate}
        \item {\small Departamento de F\'{\i}sica Te\'orica II. Universidad Complutense 
	de Madrid. 28040 Madrid (Spain).}
        \item {\small Departament de Matem\`atica Aplicada I. Universitat Polit\`ecnica de 
	Cata\-lunya. Av. Diagonal 647, 08028, Barcelona (Spain).}
\end{enumerate}
% Begining of the abstract
Here you should write the abstract of your contribution. It should be at most one page
long , including references if needed. For example \cite{needs2001}.
% End of the abstract
% If there are references, use the following format. If you don't need references, 
%you can delete the following lines.
\begin{thebibliography}{99}
\bibitem{needs2001}
Mikhailov, A.V. and Santini, P.M (eds.).
\newblock   XV International Conference on Nonlinear Evolution Equations and Dynamical Systems (NEEDS 2001).
\newblock {\em Theoretical and Mathematical Physics}, \textbf{133}(2-3), 2002.
\end{thebibliography}
% Do not remove the following line
\end{document}