@article {227,
	title = {Estimation of Slipping Organ Motion by Registration with Direction-Dependent Regularization},
	journal = {Medical Image Analysis},
	volume = {16},
	year = {2012},
	month = {1/2012},
	pages = {150 - 159},
	issn = {13618415},
	doi = {10.1016/j.media.2011.06.007},
	author = {Schmidt-Richberg, Alexander and Werner, René and Heinz Handels and Jan Ehrhardt}
}
