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\bibitem{c++lsr3.0.2lm}
AT\Symand[]T and UNIX System Laboratories, Inc.
\newblock {\em C++ Language System Release 3.0.2 Library Manual}, 1991.

\bibitem{c++lsr3.0.2mrdrn}
AT\Symand[]T and UNIX System Laboratories, Inc.
\newblock {\em C++ Language System Release 3.0.2 Machine-Readable Documentation
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\bibitem{c++lsr3.0.2rn}
AT\Symand[]T and UNIX System Laboratories, Inc.
\newblock {\em C++ Language System Release 3.0.2 Release Notes}, 1991, 1992.

\bibitem{c++lsr3.0.2sr}
AT\Symand[]T and UNIX System Laboratories, Inc.
\newblock {\em C++ Language System Release 3.0.2 Selected Readings}, 1991,
  1992.

\bibitem{booch94}
G.~Booch.
\newblock {\em Object-Oriented Analysis and Design with Applications}.
\newblock The Benjamin/Cummings Series in Object-Oriented Software Engineering.
  The Benjamin/Cummings Publishing Company, Inc., Reading, Massachusetts,
  second edition, 1994.

\bibitem{ellis90}
M.A. Ellis and B.~Stroustrup.
\newblock {\em The Annotated C++ Reference Manual}.
\newblock Addison-Wesley, Reading, MA, 1990.

\bibitem{poskanzer}
J.~Poskanzer.
\newblock Pbmplus: Extended portable bitmap toolkit.
\newblock internet distribution, December 1991.

\bibitem{ritter93}
G.X. Ritter.
\newblock Image algebra with applications.
\newblock Unpublished manuscript.

\bibitem{seindal91}
R.~Seindal.
\newblock {\em GNU m4: A macro processor}.
\newblock Free Software Foundation, Inc., Cambridge, MA, 1.0 edition, 1991.

\bibitem{stallman91}
R.M. Stallman and R.~McGrath.
\newblock {\em GNU Make}.
\newblock Free Software Foundation, Inc., Cambridge, MA, version 3.61 beta
  edition, 1991.

\bibitem{stroustrup91}
B.~Stroustrup.
\newblock {\em The C++ Programming Language Second Edition}.
\newblock Addison-Wesley, Reading, MA, 1991.

\bibitem{c++lsr3.0.2im}
USL.
\newblock {\em C++ Language System Release 3.0.2 Internals Manual}, 1991, 1992.

\bibitem{wall91}
L.~Wall and R.~Schwartz.
\newblock {\em Programming Perl}.
\newblock O'Reilly \Symand[] Associates, Inc., Sebastopol, CA, 1991.

\end{thebibliography}
