\begin{thebibliography}{10}

\bibitem{sicp}
Harold Abelson and Gerald~Jay {Sussman with Julie Sussman}.
\newblock {\em \urlp{Structure and Interpretation of Computer Programs
  (``SICP'')}{http://mitpress.mit.edu/sicp/full-text/book/book.html}}.
\newblock MIT Press, 2nd edition, 1996.

\bibitem{hmf}
Milton Abramowitz and Irene~A Stegun, editors.
\newblock {\em
  \urlh{http://store.yahoo.com/doverpublications/0486612724.html}{Handbook of
  Mathematical Functions: with Formulas, Graphs, and Mathematical Tables}}.
\newblock Dover Publications, 1965.

\bibitem{kawa}
Per Bothner.
\newblock \urlp{The Kawa Scheme system}{http://www.gnu.org/software/kawa}.

\bibitem{wc:amb}
William Clinger.
\newblock {Nondeterministic call by need is neither lazy nor by name}.
\newblock In {\em {Proc ACM Symp Lisp and Functional Programming}}, pages
  226--234, 1982.

\bibitem{tspl}
R~Kent Dybvig.
\newblock {\em \urlp{The Scheme Programming
  Language}{http://www.scheme.com/tspl2d}}.
\newblock Prentice Hall PTR, 2nd edition, 1996.

\bibitem{gambit}
Marc Feeley.
\newblock \urlp{Gambit Scheme System}{http://www.iro.umontreal.ca/~gambit}.

\bibitem{mf:prolog}
Matthias Felleisen.
\newblock {Transliterating Prolog into Scheme}.
\newblock Technical Report 182, {Indiana U Comp Sci Dept}, 1985.

\bibitem{htdp}
Matthias Felleisen, Robert~Bruce Findler, Matthew Flatt, and Shriram
  Krishnamurthi.
\newblock {\em \urlp{How to Design Programs: An Introduction to Programming and
  Computing}{http://www.htdp.org}}.
\newblock \urlh{http://mitpress.mit.edu/book-home.tcl?isbn=0262062186}{MIT
  Press}, 2001.

\bibitem{mzscheme}
Matthew Flatt.
\newblock \urlp{MzScheme}{http://www.cs.rice.edu/CS/PLT/packages/mzscheme}.

\bibitem{tls}
Daniel~P Friedman and Matthias Felleisen.
\newblock {\em \urlh{http://www.ccs.neu.edu/~matthias/BTLS}{The Little
  Schemer}}.
\newblock MIT Press, 4th edition, 1996.

\bibitem{tss}
Daniel~P Friedman and Matthias Felleisen.
\newblock {\em \urlh{http://www.ccs.neu.edu/~matthias/BTSS}{The Seasoned
  Schemer}}.
\newblock MIT Press, 1996.

\bibitem{eopl}
Daniel~P Friedman, Mitchell Wand, and Christopher~T Haynes.
\newblock {\em
  \urlh{http://mitpress.mit.edu/book-home.tcl?isbn=0262061457}{Essentials of
  Programming Languages}}.
\newblock MIT Press, McGraw-Hill, 1992.

\bibitem{guile}
FSF.
\newblock \urlp{Guile: Project GNU's Extension
  Language}{http://www.gnu.org/software/guile/guile.html}.

\bibitem{stk}
Erick Gallesio.
\newblock \urlp{STk}{http://kaolin.unice.fr/STk/STk.html}.

\bibitem{pocketscheme}
Ben Goetter.
\newblock \urlp{Pocket Scheme for the H/PC and
  P/PC}{http://www.angrygraycat.com/scheme/pscheme.htm}.

\bibitem{logick}
Christopher~T Haynes.
\newblock {Logic continuations}.
\newblock In {\em {J Logic Program}}, pages 157--176, 1987.
\newblock vol 4.

\bibitem{engine}
Christopher~T Haynes and Daniel~P Friedman.
\newblock {Engines Build Process Abstractions}.
\newblock In {\em {Conf ACM Symp Lisp and Functional Programming}}, pages
  18--24, 1984.

\bibitem{coroutine}
Christopher~T Haynes, Daniel~P Friedman, and Mitchell Wand.
\newblock {Continuations and Coroutines}.
\newblock In {\em {Conf ACM Symp Lisp and Functional Programming}}, pages
  293--298, 1984.

\bibitem{hunter}
J~A~H Hunter.
\newblock {\em
  \urlh{http://store.yahoo.com/doverpublications/0486233472.html}{Mathematical
  Brain-Teasers}}.
\newblock Dover Publications, 1976.

\bibitem{scm}
Aubrey Jaffer.
\newblock \urlp{SCM}{http://swissnet.ai.mit.edu/~jaffer/SCM.html}.

\bibitem{keene}
Sonya~E Keene.
\newblock {\em Object-oriented Programming in Common Lisp: A Programmer's Guide
  to CLOS}.
\newblock Addison-Wesley, 1989.

\bibitem{r5rs}
Richard Kelsey, William Clinger, and Jonathan {Rees (eds)}.
\newblock \urlp{Revised\^{}5 Report on the Algorithmic Language Scheme
  (``R5RS'')}{http://www.schemers.org/Documents/Standards/R5RS/HTML/r5rs.html},
  1998.

\bibitem{amop}
Gregor Kiczales, Jim des Rivi\`eres, and Daniel~G Bobrow.
\newblock {\em The Art of the Metaobject Protocol}.
\newblock MIT Press, 1991.

\bibitem{jmc:amb}
John McCarthy.
\newblock \urlh{http://www-formal.stanford.edu/jmc/basis1/basis1.html}{A Basis
  for a Mathematical Theory of Computation}.
\newblock In P~Braffort and D~Hirschberg, editors, {\em {Computer Programming
  and Formal Systems}}. North-Holland, 1967.

\bibitem{mitscheme}
{MIT Scheme Team}.
\newblock \urlp{MIT Scheme}{http://www.swiss.ai.mit.edu/projects/scheme}.

\bibitem{cgi}
NCSA.
\newblock \urlp{The Common Gateway Interface}{http://hoohoo.ncsa.uiuc.edu/cgi}.

\bibitem{q:lisp}
Christian Queinnec.
\newblock {\em \urlh{http://youpou.lip6.fr/queinnec/WWW/LiSP.html}{Lisp in
  Small Pieces}}.
\newblock Cambridge University Press, 1996.

\bibitem{4cp}
Thomas~L Saaty and Paul~C Kainen.
\newblock {\em The Four-Color Problem: Assaults and Conquest}.
\newblock Dover Publications, 1986.

\bibitem{bigloo}
Manuel Serrano.
\newblock \urlp{Bigloo}{http://www-sop.inria.fr/mimosa/fp/Bigloo}.

\bibitem{aop}
Leon Sterling and Ehud Shapiro.
\newblock {\em \urlh{http://mitpress.mit.edu/book-home.tcl?isbn=0262193388}{The
  Art of Prolog}}.
\newblock MIT Press, 2nd edition, 1994.

\bibitem{chicken}
Felix~L Winkelmann.
\newblock \urlp{Chicken: A practical and portable Scheme
  system}{http://www.call-with-current-continuation.org/chicken.html}.

\bibitem{zmc:amb}
Ramin Zabih, David McAllester, and David Chapman.
\newblock {Non-deterministic Lisp with dependency-directed backtracking}.
\newblock In {\em {AAAI-87}}, pages 59--64, 1987.

\end{thebibliography}