@article {bullock2005towards,
	title = {Towards real-time 3-D monocular visual tracking of human limbs in unconstrained environments},
	journal = {Real-Time Imaging},
	volume = {11},
	number = {4},
	year = {2005},
	pages = {323{\textendash}353},
	publisher = {Academic Press},
	author = {Bullock, Dave and Zelek, John}
}
