@conference {,
	title = {Reflector detection with ultrasonic array based on encoded transmission},
	booktitle = {2011 International Conference on Indoor Positioning and Indoor Navigation (IPIN 2011)},
	year = {2011},
	month = {09/2011},
	pages = {1-4},
	address = {Guimaraes (Portugal)},
	author = {C. Diego and {\'A}lvaro Hern{\'a}ndez and A. Jim{\'e}nez and Fernando J. {\'A}lvarez and R. Sanz and Joaquin Aparicio and },
	editor = { and  and  and }
}
