Salah I. Al-Mously and  Marai M. Abousetta,  User-s Hand Effect on TIS of Different GSM900/1800 Mobile Phone Models Using FDTD Method.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2009, vol. 25(1). 83 - 88
    [viewed 21 January 2020]. Available from: https://publications.waset.org/pdf/15483.