-% \bibitem{ALF} The ALF family of proof-assistants:\\
-% {\tt http://www.cs.chalmers.se/ComputingScience/Research/\\Logic/implementation.mhtml}
-%
-% \bibitem{Coq} The Coq proof-assistant:\\
-% {\tt http://coq.inria.fr/}
-%
-% \bibitem{FORMAVIE} The Formavie project:\\
-% {\tt http://http://www-sop.inria.fr/oasis/Formavie/}
-%
-% \bibitem{EHELM} The HELM project:\\
-% {\tt http://www.cs.unibo.it/helm/}
-%
-% \bibitem{MATHWEB} The MathWeb project:\\
-% {\tt http://www.mathweb.org/}
-%
-% \bibitem{PCOQ} The PCoq project:\\
-% {\tt http://www-sop.inria.fr/lemme/pcoq/}
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-% Portland, Oregon, USA.
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-% decision procedures. In Martin Abadi and Takahashi Ito, editors, TACS'97,
-% volume 1281. LNCS, Springer-Verlag, 1997.
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-% Calcul des Constructions Inductives}, PhD. Thesis, Universit\'e de Nice-Sophia
-% Antipolis, 2000.
-%
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-% Presented at LPAR2000.
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-% Checking. Presented at OSDI'96, October 1996.
-%
-% \bibitem{Necula2} G. Necula, P. Lee. Efficient Representation and Validation of Proofs. Presented at LICS'98, June 1998
-%
-% \bibitem{Werner} B. Werner. \emph{Une Th\'eorie des Constructions Inductives},
-% PhD. Thesis, Universit\'e Paris VII, May 1994.
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+ Mathematical Knowledge Management in HELM. In Annals of Mathematics and
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+ Public Deliverable D04 of the MONET Project.\\
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+ dimostrazione interattiva}, Master Thesis, University of Bologna, 2002.