@INPROCEEDINGS{2006-MICCAI-HM,
  author = {E. Haber and J. Modersitzki},
  title = {Intensity gradient based registration and fusion of multi-modal images},
  booktitle = {Medical Image Computing and Computer-Assisted Intervention -- MICCAI
    2006},
  year = {2006},
  editor = {C Barillot and DR Haynor and P Hellier},
  volume = {3216},
  pages = {591--598},
  publisher = {Springer LNCS},
}