src/HOL/Proofs/Extraction/document/root.tex

typo

\documentclass[11pt,a4paper]{article}
\usepackage[T1]{fontenc}
\usepackage{isabelle,isabellesym}
\usepackage{pdfsetup}

\urlstyle{rm}
\isabellestyle{it}

\begin{document}

\title{Examples for program extraction in Higher-Order Logic}
\author{Stefan Berghofer}
\maketitle

\nocite{Berger-JAR-2001,Coquand93}

\tableofcontents

\parindent 0pt\parskip 0.5ex

\input{session}

\bibliographystyle{abbrv}
\bibliography{root}

\end{document}