\begin{thebibliography}{1}

\bibitem{dijkstra-notes}
Edsger~W. Dijkstra.
\newblock Notes on structured programming.
\newblock In {\em Structured Programming}, pages 1--82. Academic Press, 1972.

\bibitem{knuth}
Donald~E. Knuth.
\newblock {\em Fundamental Algorithms}, volume~1 of {\em The Art of Computer
  Programming}.
\newblock Addison-Wesley, second edition, 1973.

\bibitem{TeXbook}
Donald~E. Knuth.
\newblock {\em The \TeX book}, volume~A of {\em Computers \& Typesetting}.
\newblock Addison-Wesley, 1986.

\bibitem{noweb}
Norman Ramsey.
\newblock Literate programming simplified.
\newblock {\em IEEE Software}, pages 97--105, September 1994.

\end{thebibliography}
