\begin
Discover why 18 million people worldwide trust Overleaf with their work.
%Template prepared for the Latin American Congress on Industrial and Applied Mathematics - LACIAM to be held at the School of Applied Mathematics, FGV EMAp, Rio de Janeiro, Brazil, in 2023
%% DO NOT CHANGE ANYTHING FROM HERE UNTIL THE NEXT COMMENTED LINE
\documentclass[11pt]{article}
\usepackage{calc}
\usepackage{color}
\usepackage{amsfonts}
\usepackage{latexsym}
\usepackage{placeins}
\usepackage{hyperref}
\usepackage[a4paper,top=5.5cm,bottom=4cm,left=2.5cm, right=2.5cm,foot=1cm]{geometry}
\pagenumbering{gobble}
\ifx\pdftexversion\undefined
\usepackage[dvips]{graphicx}
\else
\usepackage[pdftex]{graphicx}
\fi
\usepackage{amssymb}
\usepackage{authblk}
\usepackage{amsmath}
\usepackage[cp1250]{inputenc}
\usepackage[OT4]{fontenc}
\addtolength{\voffset}{-3.5cm} \addtolength{\textheight}{4cm}
\renewcommand{\refname}{\large{\textbf{ Bibliography}}}
\renewcommand\Authfont{\scshape\small}
\renewcommand\Affilfont{\itshape\small}
\newcommand{\keywords}[1]{\noindent{\large{\bf Keywords:}} #1\\}
\setlength{\affilsep}{1em}
\newcommand{\smalllineskip}{\baselineskip=15pt}
\newcommand{\emailaddress}[1]{{\sf#1}}
\newcommand{\speaker}[1]{\author{\underline{#1}}}
\newcommand{\speakeraffil}[1]{\affil{#1}}
\let\LaTeXtitle\title
\renewcommand{\title}[1]{\LaTeXtitle{\Large{\textbf{#1}}}}
%% BEGINNING OF THE DOCUMENT
%%TITLE
\title{Title of contribution} % Write the tile of your contribution here
\date{\vspace{-6ex}} % Do not modify this line
%%AUTHORS
\speaker{John Smith} % Write speaker name here
\author[2]{Juan Perez} % Write first co-author name here, if there is any. If not, remove the line.
%%AFFILIATIONS
\speakeraffil{University, Country,\,\emailaddress{smith@domain.xx}} % Write affiliation/s of the speaker here.
\affil[2]{Another University, Country,\,\emailaddress{perez@domain.yy}} % Write affiliation/s of the first co-author here, if there is any. If not, remove the line.
% You can add any number of authors by repeating what is done for the first co-author above.
% Example for some authors authors share one affiliation:
%\speaker{John Smith}
%\author[1,2]{Juan Perez}
%\spaekeraffil{University 1, Country 1 {\tt \href{mailto:mail address}{\, smith@domain.xx}}}
%\affil[2]{University 2, Country 2 {\tt \href{mailto:mail address}{\, perez@domain.xx}}}
%%DOCUMENT
\begin{document}
\maketitle
%% INDICATE 2 TO 5 KEYWORDS
\keywords{keyword1, keyword2, keyword3}
%% PLEASE WRITE YOUR ABSTRACT HERE
Write the abstract here and remove this text. Compiled abstract of {\bf MAXIMUM 1 PAGE}.
%%THE END OF ABSTRACT CONTENT
%% REMOVE THE %-SYMBOLS IN THE NEXT LINE IF YOU DO NOT WANT TO INCLUDE BIBLIOGRAPHY
%% \end{document}
%% IF YOU WANT TO INCLUDE A BIBLIOGRAPHY LIST, PUT THE CITATIONS IN THE SEQUEL
\bibliographystyle{plain}
\begin{thebibliography}{99}
% FOR ARTICLE REFERENCE FOLLOW THIS FORMAT:
\bibitem{ref1} {\sc J. Smith,} {\it Article title.} Journal title,
{Volume, Number, Pages, Year.}
% FOR BOOK REFERENCE FOLLOW THIS FORMAT:
\bibitem{ref2} {\sc J. Marsden, J. Ball,} {\it Book title},
{ Editor, City, Year.}
\end{thebibliography}
\end{document}