Khalaf, A. A. M., A.-R. B. M. El-Daly, and H. F. A. Hamed. “A Hybrid NLMS/RLS Algorithm to Enhance the Beamforming Process of Smart Antenna Systems”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), vol. 10, no. 1-4, Jan. 2018, pp. 15-22, https://jtec.utem.edu.my/jtec/article/view/3570.