WASET
    Jong-won Lee,  A Secure Mobile OTP Authentication Scheme for User Mobility Cloud VDI Environment.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2012, vol. 70(10). 1223 - 1226
    [viewed 18 April 2024]. Available from: https://publications.waset.org/pdf/4820.