TY - CONF T1 - Android application for indoor positioning of mobile devices using ultrasonic signals T2 - 2016 International Conference on Indoor Positioning Systems. Y1 - 2016 A1 - María del Carmen Perez A1 - D.Gualda A1 - E. Diaz A1 - P. Pajuelo A1 - José Manuel Villadangos A1 - Ureña, J. A1 - E. Garcia JF - 2016 International Conference on Indoor Positioning Systems. PB - IEEE CY - Alcala de Henares, España SN - 978-1-5090-2425-4/16 ER -