Sobre Latex

Múltiples referencias en Beamer

\begin{frame}[allowframebreaks]
\frametitle{Referencias}
\tiny\bibliographystyle{plain}                           % style
\bibliography{book_chapters,library}            % *.bib
\end{frame}

Fuente: tex

máx y max


\documentclass[letterpaper,11pt]{article}

%\usepackage[english, spanish, es-nodecimaldot, es-tabla, es-minimal]{babel} % max
\usepackage[english, spanish, es-nodecimaldot, es-tabla]{babel} % máx
\selectlanguage{spanish}

\usepackage[utf8]{inputenc}
\usepackage{lmodern}

\title{sample}
\author{author}
\date{\today}

\begin{document}

\maketitle

\begin{equation}
\max
\end{equation}

\end{document}