\begin{thebibliography}{8}
\expandafter\ifx\csname natexlab\endcsname\relax\def\natexlab#1{#1}\fi
\expandafter\ifx\csname url\endcsname\relax
  \def\url#1{\texttt{#1}}\fi
\expandafter\ifx\csname urlprefix\endcsname\relax\def\urlprefix{URL }\fi

\bibitem[{Arentze \textit{et~al.}(2000)Arentze, Hofman, {van Mourik} and
  Timmermans}]{ALBATROSS}
Arentze, T., F.~Hofman, H.~{van Mourik} and H.~Timmermans (2000) {ALBATROSS}: A
  multi-agent rule-based model of activity pattern decisions, \textit{Paper},
  \textbf{22}, Transportation Research Board Annual Meeting, Washington, D.C.

\bibitem[{Arnott \textit{et~al.}(1993)Arnott, Palma and
  Lindsey}]{Arnott:etc:bottleneck}
Arnott, R., A.~D. Palma and R.~Lindsey (1993) A structural model of peak-period
  congestion: A traffic bottleneck with elastic demand, \textit{The American
  Economic Review}, \textbf{83}~(1) 161.

\bibitem[{Bowman(1998)}]{Bowman:thesis}
Bowman, J.~L. (1998) The day activity schedule approach to travel demand
  analysis, Ph.D. thesis, Massachusetts Institute of Technology, Cambridge, MA.

\bibitem[{Doherty and Axhausen(1998)}]{Doherty:fvu}
Doherty, S.~T. and K.~W. Axhausen (1998) The developement of a unified
  modelling framework for the household activity-travel scheduling process, in
  \textit{Verkehr und {M}obilit{\"a}t}, no.~66 in Stadt Region Land, Institut
  f{\"u}r Stadtbauwesen, Technical University, Aachen, Germany.

\bibitem[{Kitamura(1996)}]{PCATS}
Kitamura (1996) Applications of models of activity behavior for activity based
  demand forecasting, in \textit{{TMIP} ({T}ravel model improvement program)
  {A}ctivity-based travel forecasting conference}, June 1996. See
  http://tmip.fhwa.dot.gov/clearinghouse/docs/abtf/.

\bibitem[{Recker(1995)}]{Recker}
Recker, W. (1995) The household activity pattern problem: {G}eneral formulation
  and solution, \textit{Transportation Research B}, \textbf{29} 61--77.

\bibitem[{Salvini and Miller(2003)}]{ILUTE}
Salvini, P. and E.~Miller (2003) {ILUTE}: {A}n operational prototype of a
  comprehensive microsimulation model of urban systems, in \textit{To be
  presented at the tri-annual meeting of the International Association for
  Travel Behavior Research (IATBR)}, Lucerne, Switzerland.

\bibitem[{Waddell \textit{et~al.}(2003)Waddell, Borning, Noth, Freier, Becke
  and Ulfarsson}]{URBANSIM}
Waddell, P., A.~Borning, M.~Noth, N.~Freier, M.~Becke and G.~Ulfarsson (2003)
  Microsimulation of urban development and location choices: {D}esign and
  implementation of {U}rban{S}im, \textit{Networks and Spatial Economics},
  \textbf{3}~(1) 43--67.

\end{thebibliography}