@article {Viswanathan2004,
	title = {Immediate Ultrasound Calibration from Three Poses and Minimal Image Processing},
	journal = {Proceedings in Lecture Notes in Computer Science Medical Image Computing and Computer-Assisted Intervention (MICCAI)},
	volume = {3217},
	year = {2004},
	pages = {446-454},
	author = {Anand Viswanathan and Emad Boctor and Russell H. Taylor and Gregory D. Hager and Gabor Fichtinger}
}
