\documentclass[12pt,a4]{article}

\usepackage{amsmath,amssymb,latexsym}
\usepackage{epsf,enumerate}
\parindent0cm
\topsep0ex
\textheight23.5cm
\topmargin-1cm
\oddsidemargin0.9cm
\textwidth14.5cm

\setlength{\parskip}{2mm}
\newcommand{\absskip}{\vspace{0.8cm}}
\newcommand{\listsetting}{\vspace{-1.3mm}
 	    				\setlength{\itemsep}{0cm}
                        \setlength{\parsep}{0cm}
                        \setlength{\topsep}{0cm}
                        \setlength{\partopsep}{0cm}
                        \setlength{\parskip}{0cm}}

\begin{document}
%% Please use the standard LaTex commands. Leave the blank lines in the document. Below is an example of an expected abstract form. 
%% If there are any fields, where you don't want to add any data, please add them to comment using %%.

\absskip
\centerline{\Large\bf Title of the talk}

\bigskip
\centerline{\bf Author (i.e., speaker)'s name}

%If there is more than one author, than the co-authors should be written here.
\smallskip
\centerline{(joint work with Author2, Author3)}

\medskip
Here should be the text of your abstract. The abstract should be limited to one page. To cite please use the form \cite{JB2009}.\\

% References if required

\centerline{\sc References}

\begin{enumerate}[{[1]}]
\listsetting
\bibitem{JB2009} J. Black, Paper 1, Journal J. 2 (2009), 425--477.
\bibitem{WB2007} A. White, C. Brown, Note 1, Journal J. 1 (2007), 3297--3301.
\end{enumerate}

\end{document}
