\documentclass[12pt]{article}
\usepackage{a4}
\usepackage{latexsym} % Gets \Box etc
\usepackage{amssymb}  % \gtrsim, \geqslant, etc etc: 
\usepackage{amsmath} 
\usepackage{graphicx}
\usepackage{epsfig,wrapfig}
\usepackage[ usenames]{color}
\usepackage[rflt]{floatflt} 
    \textheight     23cm
    \textwidth      16.5cm
    \marginparwidth 0.80in
    \oddsidemargin  -0.5cm
    \evensidemargin -0.5cm
    \topmargin -1.cm

%    \textheight     8.66in
%    \textwidth      5.70in
%    \marginparwidth 0.80in
%    \oddsidemargin  0.20in
%    \evensidemargin 0.20in
%        
\begin{document}

%\voffset-3cm
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% several bibliographies in one text file
% the series of new commands, tested on LaTeX2e and on Latex2.09
% via the compatibility mode.
% version redefining thebibliography and cite.
% J. Bijnens 18 Sep. 1998
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newcommand{\talk}[3]
{\noindent{#1}\\ \mbox{}\ \ \ {\it #2} \dotfill {\pageref{#3}}\\[1.8mm]}
\newcommand{\stalk}[3]
{{#1} & {\it #2} & {\pageref{#3}}\\}
\newcommand{\snotalk}[3]
{{#1} & {\it #2} & {{#3}n.r.}\\}
\newcommand{\notalk}[3]
{\noindent{#1}\\ \mbox{}\ \ \ {\it #2} \hfill {{#3}n.r.}\\[1.8mm]}
\newcounter{zyxabstract}     %  step by one when going to new abstract
\newcounter{zyxrefers}        %  counts the references in every bibliography

\newcommand{\newabstract}
{\clearpage\stepcounter{zyxabstract}\setcounter{equation}{0}
\setcounter{footnote}{0}\setcounter{figure}{0}\setcounter{table}{0}}

\newcommand{\talkin}[2]{\newabstract\label{#2}\input{#1}}                

\newcommand{\rlabel}[1]{\label{zyx\arabic{zyxabstract}#1}}
\newcommand{\rref}[1]{\ref{zyx\arabic{zyxabstract}#1}}

\renewenvironment{thebibliography}[1] % as standard,the width of largest number
{\section*{References}\setcounter{zyxrefers}{0}
\begin{list}{ [\arabic{zyxrefers}]}{\usecounter{zyxrefers}}}
{\end{list}}
% for those who really need every possible mm:
\newenvironment{thebibliographynotitle}[1] % as 
%                              standard,the width of largest number
{\setcounter{zyxrefers}{0}
\begin{list}{ [\arabic{zyxrefers}]}
{\usecounter{zyxrefers}\setlength{\itemsep}{-2mm}}}
{\end{list}}

\renewcommand{\bibitem}[1]{\item\rlabel{y#1}}% extra y to avoid duplication
\renewcommand{\cite}[1]{[\rref{y#1}]}      %of labels in text and bibliography
\newcommand{\citetwo}[2]{[\rref{y#1},\rref{y#2}]}
\newcommand{\citethree}[3]{[\rref{y#1},\rref{y#2},\rref{y#3}]}
\newcommand{\citefour}[4]{[\rref{y#1},\rref{y#2},\rref{y#3},\rref{y#4}]}
\newcommand{\citefive}[5]
{[\rref{y#1},\rref{y#2},\rref{y#3},\rref{y#4},\rref{y#5}]}
\newcommand{\citesix}[6]
{[\rref{y#1},\rref{y#2},\rref{y#3},\rref{y#4},\rref{y#5},\rref{y#6}]}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\documentclass[12pt]{article}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% PROCEEDINGS
%
% All review speakers and the speakers who gave individual talks shall provide a
% maximal 2 page proceedings contribution.  Review speakers should give a brief
% introduction to their subject. Individual speakers should submit  in a concise
% form the relevant results and statements of the author and/or the group he or
% she represents.   We also invite the session conveners to submit a 1 or 2 page
% summary of the most important points that came out of their session, including
% places where there are still disagreements.  Everyone is welcome to include
% sentences that comment about the results of other groups. These contributions
% will be collected in a web proceedings that shall be submitted to the eprint
% arXiv, with the organizers plus all people who make proceedings contributions
% listed alphabetically as authors.  
% 
% Please use the liked template to prepare your contribution and send your
% contribution back to the alphas mail account (alphas@mpp.mpg.de) by March 15, 2011.  
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%     RULES:
%     
%     Page limit is 2 (two) for each contribution.
%
%     Do not use sections or subsections.
%
%     If you really need to include pictures use the includegraphics command
%     such as (figure size is up to you)
%
%      \begin{center}
%      \includegraphics[height=5.cm]{epsfilename.eps} 
%      \end{center}
%
%     You can create tables as you like.
% 
%     Please do not use self-created macros.
%    
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%            DO NOT CHANGE ANYTHING ABOVE THIS LINE !!!!!
%
%           YOUR CONTRIBUTION STARTS ONLY BELOW THIS LINE !!!!!
%         
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


\begin{center}
{\large\bf Title of your Contribution}\\[0.5cm]
Author Name(s)\\[0.3cm]
Your address shall appear here!
\end{center}

This is what we think about our and other peoples $\alpha_s$ determinations. We
have to be brief and consise when making statements. It is possible to also use
this writeup to provide preliminary results that might be useful to the others.
This is an example for an equation:
\begin{eqnarray}
\int_0^1{\rm d}x\,\, x & = & \frac{1}{2}
\,.
\end{eqnarray}


Example for a table.
\begin{center}
\begin{tabular}{|r|l||c|rrr|c|c|}\hline
Platz & Verein & Sp. & S & U & N &  Tore & Punkte  \\ \hline\hline
1. & FC Bayern & 32 & 19 & 8 & 5 & 100:1 & 100:1 \\ \hline 
1. & all others & 32 & 19 & 8 & 5 & 1:100 & 1:100 \\ \hline 
\end{tabular}
\end{center}

The aim of the DIRAC experiment at CERN~\cite{DIRAC_proposal:1994}
is to measure the lifetime of pionium, a hydrogen-like atom consisting 
of a $\pi^+$ and a $\pi^-$ meson.
The lifetime $\tau$ is dominated by the charge exchange process 
($\pi^+\pi^-\rightarrow\pi^0\pi^0$) and thus
is inversely proportional to the squared difference
between S-wave $\pi\pi$~scattering lengths with isospin 0 and 2:
$|a_0-a_2|$.
This difference was calculated within the framework
of Standard Chiral Perturbation Theory with a precision
$1.5$\% ~\cite{ChPT_Colangelo:2001}
which leads to the lifetime prediction
$\tau_{1S}=(2.9\pm 0.1)\times 10^{-15}$s.

The systematical error is dominated by uncertainties in multiple scattering,
presence of non-identified admixture of $K^+K^-$ and proton-antiproton pairs,
uncertainties in the correction due to finite size production and
strong interaction for Coulomb-correlated pairs.
The analysis of the full data sample (about 2 times more than analysed here) 
and dedicated measurements, 
which will decrease systematical errors, 
is in progress.


\begin{thebibliography}{99}

\bibitem{DIRAC_proposal:1994}
B.~Adeva et. al., DIRAC proposal, 
CERN-SPSLC-95-1, SPSLC-P-284 (1995).\\[-5mm]

\bibitem{ChPT_Colangelo:2001}
G.~Colangelo, J.~Gasser and H.~Leutwyler, 
Nucl. Phys. B603 (2001) 125.\\[-5mm] 


\end{thebibliography}




%%*********************************************************************
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%            DO NOT CHANGE ANYTHING BELOW THIS LINE !!!!!
%         
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


\end{document}
