Jebrane, Asma, Ahmed Toumanari, Naîma Meddah, and Mohamed Bousseta. “A New Efficient Authenticated and Key Agreement Scheme for SIP Using Digital Signature Algorithm on Elliptic Curves”. Journal of Telecommunications and Information Technology 68, no. 2 (June 30, 2017): 62–68. Accessed April 18, 2026. https://jtit.pl/jtit/article/view/665.