@article {Peckar-et-al-99,
	title = {Parameter-Free Elastic Deformation Approach for 2D and 3D Registration Using Prescribed Displacements},
	journal = {J. Math. Imaging and Vision},
	volume = {10},
	number = {2},
	year = {1999},
	pages = {143{\textendash}162},
	author = {Peckar, W. and Schn{\"o}rr, C. and Rohr, K. and Stiehl, H.{\textendash}S.}
}
@conference {Heers-et-al-dagm98,
	title = {Parallele und global konvergente iterative Minimierung nichtlinearer Variationsans{\"a}tze zur adaptiven Gl{\"a}ttung und Segmentation von Bildern},
	booktitle = {Mustererkennung 1998},
	series = {Informatik aktuell},
	year = {1998},
	publisher = {Springer},
	organization = {Springer},
	address = {Heidelberg},
	author = {Heers, J. and Schn{\"o}rr, C. and Stiehl, H.{\textendash}S.}
}
