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\newcommand{\authorinfo}[3][]{\noindent\textbf{#2} (\texttt{#1})\par\noindent\textsf{#3}\\\medskip}
\newcommand{\talktitle}[2][]{\noindent {\Large \textbf{#2}} \\\medskip}

\begin{document}

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% Dear participant, complete the informations below
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\talktitle[Your name]{Title of the work}

\authorinfo[your email]{Your name}{Your university}

\noindent\textbf{Abstract}.\index{Your name (for the index)} \label{Label for your name with 6 letters. Example: IsaNew for Isaac Newton} Put here the abstract.

\vspace*{0.5cm} \noindent Joint work with XXXX (UnB) and XXX (UFPA)

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% Put the references in the sequel (if you want)
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\begin{thebibliography}{999}

\bibitem{label}{paper... },

\end{thebibliography}


\end{document}