@INPROCEEDINGS{2004MTNS-FM,
  author = {B. Fischer and J. Modersitzki},
  title = {On medical image registration},
  booktitle = {Proceedings of the 16th International Symposium on Mathematical Theory
    of Networks and Systems (MTNS 2004), Leuven},
  year = {2004},
  editor = {B de Moor and B Motmans},
  pages = {1--5},
  publisher = {Schattauer Verlag, Stuttgart},
}