\documentclass[11pt]{article}
\usepackage{authblk}
\usepackage{fancyhdr}
\usepackage{natbib}
\usepackage{hyperref}
%
\pagestyle{fancy}
\fancyhf{} 
%\fancyhead[EL]{}
%\fancyhead[OR]{}
\fancyhead[ER]{}
\fancyhead[OR]{
 5-8 August, 2019
}
\fancyhead[OL]{
3\textsuperscript{rd} BR InterPore Conference on Porous Media
}
\renewcommand{\headrulewidth}{1.0pt}
\renewcommand{\footrulewidth}{0.0pt}
\topmargin      3mm
\evensidemargin 8mm
\oddsidemargin  2mm
\textwidth      158mm
\textheight     230mm
\frenchspacing
\sloppy


\title{Abstract title for the BR InterPore 2019}

\author[1]{First Author}
\author[2]{Second Author}
\author[2]{Third Author}
\affil[1]{Affiliation of the first author - email@first.author.org}
\affil[2]{Affiliation of the second and third authors - email@second.author.org, email@third.author.org}
\date{}                     %% if you don't need date to appear
%\setcounter{Maxaffil}{0}
\renewcommand\Affilfont{\itshape\small}
\begin{document}
  \maketitle
  \thispagestyle{fancy}
  
%--------------------------------------------------------------------
  
  \begin{abstract}
  
All the participants who want to propose a presentation
are requested to submit a \textbf{two} page abstract at
the Conference Secretariat (\href{mailto:interpore2019br@lncc.br}{interpore2019br@lncc.br}) not later than \textbf{March 31\textsuperscript{st},
2019}. Authors will be notified whether their abstracts have been
accepted or not as soon as possible. Abstracts should briefly
outline the main features, results and conclusions as well as their
general significance and contain relevant references. Please, follow
carefully the instructions for preparation of abstracts, in order to
ensure standardized formats. %The abstract must contain the full
%name, full address and e-mails of author/s. 

%--------------------------------------------------------------------

  {\bf Keywords}: 

%--------------------------------------------------------------------
  
  \end{abstract}
  
%--------------------------------------------------------------------

\begin{thebibliography}{2}

\bibitem[Biot(1941)]{biot1941}
M.~A. Biot.
\newblock General theory of three‐dimensional consolidation.
\newblock \emph{Journal of Applied Physics}, 12\penalty0 (2):\penalty0
  155--164, 1941.

\bibitem[Darcy(1856)]{Darcys_Law}
Henry Darcy.
\newblock {\em Les Fontaines Publiques de la Ville de Dijon}, 1856.

\end{thebibliography}

\end{document}
