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\begin{document}

\title{\Large{\textbf{Teoria de Recorrência: Capítulo ???}}}
\date{\today}

\maketitle

\smallskip
\smallskip

\section{Introdução}

\section{Título 1}

\begin{theorem}[Nome dos Fulaninhos]
Teorema 1
\end{theorem}

\begin{lemma}
Lema bla bla bla..
\end{lemma}

\section{Título 2}

....

\begin{thebibliography}{30}

\bibitem{AAPP}
\textsc{Alves, J, Araujo, V, Pacifico, M, Pinheiro, V.}
On the volume of singular-hyperbolic sets
\emph{}, .

\bibitem{MM}
\textsc{Metzger, R, Morales, C.}
Sectional-Hyperbolic Systems.
\emph{}, .

\bibitem{M}
\textsc{Morales, C.}
Strong stable manifolds for Sectional-Hyperbolic Sets.
\emph{}, .


\end{thebibliography}


\end{document}