\documentclass[11pt]{article}

 
\usepackage{amsmath,amsthm,amssymb,url}
\usepackage{graphicx}


% 
\title{Title of the talk/poster}
\date{}

% 
\author{First Author\textsuperscript{1}, Second Author\textsuperscript{2}, \underline{Third Author}\textsuperscript{2,3}\\[2mm]
\textsuperscript{1}Affiliation, Address, Country\\
\texttt{author1@email.here}\\[2mm]
\textsuperscript{2}Affiliation, Address, Country\\
\texttt{author2@email.here}\\[2mm]
\textsuperscript{3}Affiliation, Address, Country\\
\texttt{author3@email.here}
}
\begin{document}

\maketitle

Text of the abstract. You may use LaTeX commands here.
Try to fit the abstract in one page if possible.
Maximum of two pages can be used, including everything: title, authors, affiliations, text, keywords, references. 
In case of multiple authors, the name of the presenting author should be underlined (e.g. \underline{Name}). 
References should be given as in the example below. 

All abstracts will be published online.
Use the abstract to communicate to the rest of the participants and to the scientific community
the topic and the general setting of your research, the relevance of your results to
contemporary research as well as their significance for future work.
Avoid technical details and focus on the main issues.

Please indicate in the pre-registration form if you will be presenting a talk or a poster. 

{\small\sl Keywords: ... (optional)}

{\small\sl MSC2020: ... (optional)}


\begin{thebibliography}{99}
\footnotesize

\bibitem{article1} A.A. Author, B.B. Author, Article title, \textit{Journal}, 12(1):1-20, 2023. \url{https://example.net/}

\bibitem{book1} C.C. Author, \textit{Book title}, Publisher, City, 2023.

\bibitem{chapter1} D.D. Author, Chapter title, \textit{Book title}, Publisher, City, 21-40, 2023.

\end{thebibliography}

\end{document}


