@conference {CoughlanMS06,
	title = {Computer Vision-Based Terrain Sensors for Blind Wheelchair Users},
	booktitle = {Proceedings of the International Conference on Computers Helping People (ICCHP)},
	year = {2006},
	url = {http://users.soe.ucsc.edu/~manduchi/papers/wheelchairICCHP2006.pdf},
	author = {Coughlan, J. and Roberto Manduchi and Shen, H.}
}
