I. A. Jabbar, A. “Applying Direct Sequence Spread Spectrum to Improve the Throughput of Aloha Protocols”. Al-Rafidain Engineering Journal (AREJ) 17, no. 5 (October 28, 2009): 23–31. Accessed September 10, 2025. https://edusj.uomosul.edu.iq/index.php/arej/article/view/30540.