@article {1020,
	title = {Subpopulation-based correspondence modelling for improved respiratory motion estimation in the presence of inter-fraction motion variations},
	journal = {Physics in Medicine and Biology},
	volume = {62},
	year = {2017},
	pages = {5823-5839},
	issn = {1361-6560},
	doi = {10.1088/1361-6560/aa70cc},
	author = {Wilms, Matthias and Werner, René and Yamamoto, Tokihiro and Heinz Handels and Jan Ehrhardt}
}
