WASET
    Kerem Ok and  Serafettin Senturk and  Serdar Aktas and  Cem Cevikbas,  Secure Cryptographic Operations on SIM Card for Mobile Financial Services.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2016, vol. 117(9). 1603 - 1607
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10005334.