@article {68,
	title = {On Path-Lifting Mechanisms and Unwinding in Quaternion-based Attitude Control},
	journal = {IEEE Transactions on Automatic Control},
	volume = {58},
	number = {5},
	year = {2013},
	month = {May},
	pages = {1179{\textendash}1191},
	keywords = {attitude control},
	doi = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6389715},
	author = {C. G. Mayhew and R. G. Sanfelice and A. R. Teel}
}
