Wulandari, Triani, Doan Perdana, and Ridha Muldina Negara. “Node Density Performance Analysis on IEEE 802.11ah Standard for VoIP Service”. International Journal of Communication Networks and Information Security (IJCNIS) 10, no. 1 (April 14, 2018). Accessed March 29, 2024. https://ijcnis.org/index.php/ijcnis/article/view/3023.