@INPROCEEDINGS{2003-WBIR-DA,
  author = {E. D'Agostino and J. Modersitzki and F. Maes and D. Vandermeulen
    and B. Fischer and P. Suetens},
  title = {Free-form registration using mutual information and curvature regularization},
  booktitle = {2nd International Workshop on Biomedical Image Registration 2003},
  year = {2003},
  editor = {JC Gee and JBA Maintz and MW Vannier},
  series = {LNCS 2717},
  pages = {11--20},
  publisher = {Springer},
}