src/Pure/Examples/document/root.tex

more standard and more robust, following hints on the Net;

\documentclass[11pt,a4paper]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{ifthen,proof,amssymb,isabelle,isabellesym}

\isabellestyle{literal}
\usepackage{pdfsetup}\urlstyle{rm}


\hyphenation{Isabelle}

\begin{document}

\title{Notable Examples in Isabelle/Pure}
\maketitle

\parindent 0pt \parskip 0.5ex

\input{session}

\bibliographystyle{abbrv}
\bibliography{root}

\end{document}