@inproceedings{CASE-2006-XuLT,
	author        = "De Xu and Youfu Li and Min Tan",
	booktitle     = "{Proceedings of the Second International Conference on Automation Science and Engineering}",
	doi           = "10.1109/COASE.2006.326949",
	isbn          = "1-4244-0310-3",
	pages         = "600--605",
	publisher     = "{IEEE}",
	title         = "{Visual Positioning Using Four-Point Planar Patterns}",
	year          = 2006,
}