@conference {Holden2012a,
	title = {Surgical Motion Characterization in Simulated Needle-Insertion Procedures},
	booktitle = {SPIE Medical Imaging 2012},
	year = {2012},
	month = {02/2012},
	pages = {8316-31},
	address = {San Diego, California, USA},
	keywords = {Lumbar Puncture, Markov Models, Needle trajectories, Simulated procedures, Task segmentation},
	doi = {http://dx.doi.org/10.1117/12.911003},
	author = {M. Holden and Tamas Ungi and Sargent, D. and McGraw, Robert C and Gabor Fichtinger}
}
