@article {185,
	title = {Relative Positioning System Using Acoustic Sensors for Ubiquitous Computing Applications},
	journal = {UPGRADE, The European Journal for the Informatics Professional},
	volume = {6},
	year = {2005},
	month = {00/2005},
	pages = {39-45},
	publisher = {Nov{\'a}tica},
	address = {Espa{\~n}a},
	issn = {1684-5285},
	author = {Carlos De Marzziani and Ure{\~n}a, J. and {\'A}lvaro Hern{\'a}ndez and Manuel Mazo and Ana Jimenez and Fernando J. {\'A}lvarez and Jos{\'e} Manuel Villadangos}
}
