\begin{thebibliography}{1}

\bibitem{2009-SPIE-PeskoEtAl}
O.~Peshko, J.~Modersitzki, T.~Terlaky, C.~Menard, T.~Craig, and D.~Moseley.
\newblock Automatic localization and tracking of fiducial markers for organ
  motion analysis in image-guided radiation therapy.
\newblock pages 1--4. \em Proceedings of the SPIE 2010, Medical Imaging.
\newblock (Submitted).

\bibitem{2009-PMS}
C.~P\"{o}schl, J.~Modersitzki, and O.~Scherzer.
\newblock A variational setting for volume constrained image registration.
\newblock Technical report, NFN 092: Joint Research Program of Industrial
  Geometry, February 2009.

\end{thebibliography}