\documentclass[a4paper]{abstracts}
\begin{document}
\title{Title of your lecture}
\speaker{First Author} % author who gives a lecture
\email{first.author@mail.ru}
\affiliation{University, City, Country}
\author{Second Author} % repeat for each co-author
\email{second.author@mail.ru}
\affiliation{University, City, Country}
\maketitle
Text of your abstracts here.
\begin{thebibliography}{9}
Your bibliography here.
\end{thebibliography}
\end{document}