@conference {Seidl2006,
	title = {Optical Measurement of Needle Insertion Depth},
	booktitle = {Procedings First IEEE/RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics BioRob 2006},
	year = {2006},
	month = {20{\textendash}22 Feb},
	pages = {799{\textendash}804},
	doi = {10 1109/BIOROB 2006 1639188},
	author = {Karsten Seidl and Gabor Fichtinger and Peter Kazanzides}
}
