Farid, Z., Z. Najam, M. Y. A. Khan, S. Ahmed, and S. Akhtar. “Perspectives of Water Level Measurement in Plastic Pipes Using Wideband Horn Antenna”. Engineering, Technology & Applied Science Research 8, no. 6 (December 22, 2018): 3624–3630. Accessed July 18, 2024. https://etasr.com/index.php/ETASR/article/view/2425.