Pinem, Maksum, Muhammad Zulfin, S Suherman, Panangian M. Sihombing, and Sri Indah Rezkika. “Characterization of Outdoor to Indoor Propagation in Urban Area by Using A Combination of COST231 Walfisch-Ikegami and COST231 Multiwall Models in 1800 Mhz and 2100 Mhz”. International Journal of Engineering & Technology 7, no. 3.2 (June 20, 2018): 698–702. Accessed May 3, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/15347.