الصغير ش. (2020) “Improvement of Qualification and Throughput of Hybrid Systems for Electronic Mail Security with Using RC6 – Elgamal – MD5 Encryption Algorithms”, Tishreen University Journal -Engineering Sciences Series,, 42(4). Available at: https://journal.tishreen.edu.sy/index.php/engscnc/article/view/9913 (Accessed: 20April2024).