\documentclass[11pt,a4paper]{article}
\setlength{\textheight}{255mm}
\setlength{\topmargin}{-0.4in}
\usepackage{amssymb}
\usepackage{graphicx}
\usepackage{amsmath}
\begin{document}
\begin{center}
{\LARGE \textbf{Title of the Talk}} % In the title, capitalize only the initial letter of the important words, not minor words such as "and" and "but".
\bigskip
{\small \underline{FIRST AUTHOR'S NAME SURNAME}$^{1}$, SECOND AUTHOR'S NAME SURNAME$^{2}$, THIRD AUTHOR'S NAME SURNAME$^{3}$ }
%The speaker is underlined. The speaker does not need to be the first author.
%All names and surnames are in capitals.
\bigskip
$^1$University, City, Country
$^2$University, City, Country
$^3$University, City, Country
\bigskip
emails: $^1$name@university.edu; $^2$name@university.edu; $^3$name@university.edu
\end{center}
In order to conduct the peer review process of your abstract, it must be written in accordance with the rules specified in the website and this template. Abstract should contain \textbf{at least 50 words} excluding references (if they exist) and should \textbf{not exceed 1 page} including references. Please, follow the directions in the \TeX{} file of abstract template.
If you are using an equation in your abstract and you will be referencing that equation in the abstract, then as a label of (\textbackslash ref{yoursurname:1}), please, use your surname followed by ":" and a number of the equation (\ref{yoursurname:1}).
\begin{equation}\label{yoursurname:1}
x^{\prime }\left( t\right) =f\left( t,x\left( t\right) \right).
\end{equation}
The same principle use for references, if any, e.g.
\cite{yoursurname:1}, \cite{yoursurname:2} and \cite{yoursurname:3}.
\bigskip
\noindent\textbf{MSC 2010:} 34B05, 34A08, 90C35 \\ %At least three MSC number are mandatory
\noindent\textbf{Keywords:} Keywords1, keywords2, keywords3, keywords4, keywords5\\ %At least three keywords are mandatory
\noindent\textbf{Acknowledgement:} If you would like to indicate your project number, grant, or/and special thank related to this abstract, you can specify it here. This part is optional. %optional
\begin{thebibliography}{9} %optional
%%%% example for a book %%%%%%%%%%%%%
\bibitem{yoursurname:1}
G. Gasper, M. Rahman,
Basic Hypergeometric Series.
\emph{Cambridge University Press, Cambridge}, 1990.
%%%% example for journal's article %%%%%%%%%%%%%%%%%
\bibitem{yoursurname:2}
J. R. Wang, Y. Zhou and M. Fe\v{c}kan,
On recent developments in the theory of boundary value problems for impulsive fractional differential equations.
\emph{Comput. Math. Appl.} \textbf{64} (2012), no. 10, 3008–-3020; doi:10.1016/j.camwa.2011.12.064.
%%%% example for a paper in Proceedings %%%%%%%%%%%%%
\bibitem{yoursurname:3}
M. Rosenblum,
Generalized Hermite polynomials and the Bose-like oscillator
calculus.
In: \emph{Operator Theory: Advances and Applications},
Birkh\"auser, Basel (1994), 369--396.
\end{thebibliography}
\end{document}