@conference {,
	title = {Android application for indoor positioning of mobile devices using ultrasonic signals},
	booktitle = {2016 International Conference on Indoor Positioning Systems.},
	year = {2016},
	month = {10/2016},
	pages = {1-10},
	publisher = {IEEE},
	organization = {IEEE},
	address = {Alcala de Henares, Espa{\~n}a },
	isbn = {978-1-5090-2425-4/16},
	author = {Mar{\'\i}a del Carmen Perez and D.Gualda and E. Diaz and P. Pajuelo and Jos{\'e} Manuel Villadangos and Ure{\~n}a, J. and E. Garcia}
}
