@conference {754,
	title = {Ultrasonic Positioning System by using UWB techniques},
	booktitle = {2009 IEEE Conference on Emerging Technologies \& Factory Automation (ETFA 2009)},
	year = {2009},
	month = {09/2009},
	pages = {1-4},
	author = {E. Garc{\'\i}a and J.J. Garcia and {\'A}lvaro Hern{\'a}ndez and A. Jim{\'e}nez and Ure{\~n}a, J. and Daniel Ruiz and Mar{\'\i}a del Carmen P{\'e}rez}
}
