@inproceedings {gvgompelDefrisedvandyck2006,
	title = {Elliptical Extrapolation of Truncated 2D CT Projections using Helgason-Ludwig consistency conditions},
	booktitle = {SPIE Medical Imaging: Physics of Medical Imaging},
	series = {Proceedings of the SPIE},
	volume = {6142},
	year = {2006},
	month = {February},
	pages = {1408-1417},
	address = {San Diego, Californa, USA},
	author = {Gert Van Gompel and M. Defrise and Dirk Van Dyck},
	editor = {Flynn, Michael J.; Hsieh, Jiang.}
}
