WASET
    Muhammad Irfan Aziz and  Thomas Owens and  Uzair Khaleeq uz Zaman,  Received Signal Strength Indicator Based Localization of Bluetooth Devices Using Trilateration: An Improved Method for the Visually Impaired People.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2019, vol. 146(2). 88 - 93
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10010071.