\begin{thebibliography}{10}

\bibitem{AtBu86}
M.P. Atkinson and P.~Bunemann.
\newblock Types and persistence in database programming languages.
\newblock {\em ACM Computing Surveys}, 19(2), June 1987.

\bibitem{Card89}
L.~Cardelli.
\newblock Typeful programming.
\newblock Technical Report~45, Digital Equipment Corporation, Systems Research
  Center, Palo Alto, California, May 1989.

\bibitem{CMA94}
L.~Cardelli, F.~Matthes, and M.~Abadi.
\newblock Extensible grammars for language specialization.
\newblock In C.~Beeri, A.~Ohori, and D.E. Shasha, editors, {\em Proceedings of
  the Fourth International Workshop on Database Programming Languages,
  Manhatten, New York}, Workshops in Computing, pages 11--31. Springer-Verlag,
  February 1994.

\bibitem{CMA94a}
L.~Cardelli, F.~Matthes, and M.~Abadi.
\newblock Extensible syntax with lexical scoping.
\newblock Technical Report 121, Digital Equipment Corporation, Systems Research
  Center, Palo Alto, California, February 1994.

\bibitem{GaMa96a}
A.~Gawecki and F.~Matthes.
\newblock Exploiting persistent intermediate code representations in open
  database environments.
\newblock In {\em Proceedings of the Fifth Conference on Extending Database
  Technology, EDBT'96}, volume 1057 of {\em Lecture Notes in Computer Science},
  Avignon, France, March 1996. Springer-Verlag.

\bibitem{KCC*92}
G.N.C. Kirby, R.C.H. Connor, Q.I. Cutts, R.~Morrison, A.~Dearle, and A.M.
  Farkas.
\newblock Persistent hyper-programs.
\newblock FIDE Technical Report Series FIDE/92/53, FIDE Project Coordinator,
  Department of Computing Sciences, University of Glasgow, Glasgow G128QQ,
  1992.

\bibitem{Korn95}
M.~Kornacker.
\newblock Persistente {S}icherungspunkte f{\"u}r langlebige {A}ktivit{\"a}ten
  in offenen {U}mgebungen.
\newblock Diplomarbeit, Fachbereich Informatik, Universit\"at Hamburg, Germany,
  August 1995.
\newblock (In German.).

\bibitem{MMS95a}
B.~Mathiske, F.~Matthes, and J.W. Schmidt.
\newblock On migrating threads.
\newblock In {\em Proceedings of the Second International Workshop on Next
  Generation Information Technologies and Systems, Naharia, Israel}, June 1995.
\newblock (Also appeared as TR FIDE/95/136).

\bibitem{MMS95b}
B.~Mathiske, F.~Matthes, and J.W. Schmidt.
\newblock Scaling database languages to higher-order distributed programming.
\newblock In {\em Proceedings of the Fifth International Workshop on Database
  Programming Languages, Gubbio, Italy}. Springer-Verlag, September 1995.
\newblock (Also appeared as TR FIDE/95/137).

\bibitem{Matt93}
F.~Matthes.
\newblock {\em Persistente Objektsysteme: Integrierte Datenbankentwicklung und
  Programmerstellung}.
\newblock Springer-Verlag, 1993.
\newblock (In German).

\bibitem{MMS96a}
F.~Matthes, R.~M{\"u}ller, and J.W. Schmidt.
\newblock Towards a unified model of untyped object stores: Experience with the
  {Tycoon} store protocol.
\newblock In {\em Advances in Databases and Information Systems (ADBIS'96),
  Proceedings of the Third International Workshop of the Moscow ACM SIGMOD
  Chapter}, 1996.

\bibitem{MaSc91b}
F.~Matthes and J.W. Schmidt.
\newblock Bulk types: Built-in or add-on?
\newblock In {\em Database Programming Languages: Bulk Types and Persistent
  Data}. Morgan Kaufmann Publishers, September 1991.

\bibitem{MaSc92a}
F.~Matthes and J.W. Schmidt.
\newblock Definition of the {Tycoon} language {TL} -- a preliminary report.
\newblock Informatik Fachbericht FBI-HH-B-160/92, Fachbereich Informatik,
  Universit\"at Hamburg, Germany, November 1992.

\bibitem{MaSc93b}
F.~Matthes and J.W. Schmidt.
\newblock System construction in the {Tycoon} environment: Architectures,
  interfaces and gateways.
\newblock In P.P. Spies, editor, {\em Proceedings of Euro-Arch'93 Congress},
  pages 301--317. Springer-Verlag, October 1993.

\bibitem{MaSc94}
F.~Matthes and J.W. Schmidt.
\newblock Persistent threads.
\newblock In {\em Proceedings of the Twentieth International Conference on Very
  Large Data Bases, VLDB}, pages 403--414, Santiago, Chile, September 1994.

\bibitem{RMS95}
A.~Rudloff, F.~Matthes, and J.W. Schmidt.
\newblock Security as an add-on quality in persistent object systems.
\newblock In {\em Second International East/West Database Workshop, Klagenfurt,
  Austria}, Workshops in Computing, pages 90--108. Springer-Verlag, 1995.
\newblock (Also appeared as TR FIDE/95/138).

\bibitem{ScMa93}
J.W. Schmidt and F.~Matthes.
\newblock Lean languages and models: Towards an interoperable kernel for
  persistent object systems.
\newblock In {\em Proceedings of the IEEE International Workshop on Research
  Issues in Data Engineering}, pages 2--16, April 1993.

\bibitem{SMV93}
J.W. Schmidt, F.~Matthes, and P.~Valduriez.
\newblock Building persistent application systems in fully integrated data
  environments: Modularization, abstraction and interoperability.
\newblock In {\em Proceedings of Euro-Arch'93 Congress}, pages 270--287.
  Springer-Verlag, October 1993.

\bibitem{SMA91}
D.~Stemple, R.~Morrison, and Atkinson M.
\newblock Type-safe linguistic reflection.
\newblock In {\em Database Programming Languages: Bulk Types and Persistent
  Data}, pages 357--362. Morgan Kaufmann Publishers, 1991.

\end{thebibliography}