Abukeshipa, Amna S., و Tawfiq S. Barhoom. 2014. "Implementation and Comparison of OTP Techniques (TOTP, HOTP, CROTP) to Prevent Replay Attack in RADIUS Protocol". مجلة كلية فلسطين التقنية للأبحاث والدراسات 1 (1): 1-15. https://doi.org/10.47641/JRS.2014-1-1.09.