Eska, Andrita Ceriana. “Propagation of Mobile Communication With Tree Obstacle Used OFDM-QAM at 10 GHz”. JURNAL INFOTEL 11, no. 3 (September 30, 2019): 88-92. Accessed September 25, 2020. https://ejournal.st3telkom.ac.id/index.php/infotel/article/view/439.