@conference {Gill2009a,
	title = {Biomechanically Constrained Groupwise US to CT Registration of the Lumbar Spine},
	booktitle = {Medical Image Computing and Computer-Assisted Intervention (MICCAI)},
	volume = {5761},
	year = {2009},
	pages = {803-810},
	publisher = {Springer},
	organization = {Springer},
	address = {London, UK},
	isbn = {978-3-642-04267-6},
	author = {Sean Gill and Parvin Mousavi and Gabor Fichtinger and Purang Abolmaesumi}
}
