@ARTICLE{2006-IJCV-HM,
  author = {E. Haber and J. Modersitzki},
  title = {Image Registration with a guaranteed displacement regularity},
  journal = {IJCV},
  year = {2006},
  volume = {1},
  note  = {DOI: 10.1007/s11263-006-8984-4},
  OLDpages = {327--330},
}