An Indoor 3D Location Tracking System Using RSSI. - Norhidayu Shahila Abu Hassan; Sazzad Hossain; Nur Haliza Abdul Wahab; Sharifah Hafizah Syed Ariffin; Norsheila Fisal; Liza Abdul Latiff; Mazlan Abbas; Khong Neng Choong (SITIS, 2010)