\begin{thebibliography}{1}

\bibitem{car:fre:oli:sag:04}
A.~M. Carvalho, A.~T. Freitas, A.~L. Oliveira, and M.-F. Sagot.
\newblock A parallel algorithm for the extraction of structured motifs.
\newblock In {\em Proceedings of 19th ACM Symposium on Applied Computing},
  pages 147--153, 2004.

\end{thebibliography}