Karoui, M. S., N. Ghariani, M. Lahiani, and H. Ghariani. “Bandwidth Enhancement of a Bell-Shaped UWB Antenna for Indoor Localization Systems”. Engineering, Technology & Applied Science Research 11, no. 1 (February 6, 2021): 6691–6695. Accessed February 1, 2023. https://www.etasr.com/index.php/ETASR/article/view/3975.