\documentclass[11pt,a4paper]{article}
\usepackage{graphicx}
\usepackage{hyperref}

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\usepackage[latin1]{inputenc}    %% european characters can be used (Windows, old Linux)
%\usepackage[utf8]{inputenc}     %% european characters can be used (Linux)
%\usepackage[applemac]{inputenc} %% european characters can be used (Mac OS)
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\usepackage[T1]{fontenc}
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\usepackage{fullpage}

\begin{document}
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\title{\textbf{Title of the Abstract with all Needed Words Capitalized}}

\author{
First Author$^1$\quad \underline{Second Author}$^2$ \quad Third Author$^2$ \\[5pt]
% Affiliations are put manually 
\small $^1$University of Wonderland, France, \texttt{first.author@wonderland.fr} \\
\small $^2$University of Rising Stars, USA, \texttt{second.author@rising-stars.edu}, \texttt{third.author@rising-stars.edu} \\
}

\date{} % <--- leave date empty
\maketitle\thispagestyle{empty} %% <-- you need this for the first page

{{\bf Keywords}: Keyword 1, keyword 2, keyword 3 (and possibly, keyword 4, keyword 5) \\[2em]

The abstract should be of at most one-page-long. 
The name of the speaker should be underlined in the list of authors above.
References like~\cite{ref} can be provided.
Hyperlinks, via hyperref, may be provided, as in \cite{ref2}.

\begin{thebibliography}{00}

\bibitem{ref}
J. Doe, An interesting paper, \emph{Journal of Interesting Papers}, 16(5):123--456, 2018. 
\bibitem{ref2}
  M. G. Crandall, H. Ishii, P.-L, Lions, User's guide to viscosity solutions of second order partial differential equations,
  \emph{Bull. Amer. Math. Soc.} 27 (1992), 1--67, 
  \href{https://arxiv.org/abs/math/9207212}{arXiv:9207212}.
\end{thebibliography}

\end{document}