Zafar Bedar Khan and Huiling Zhao (2021) “A Ring Resonator Based Wide-Band Band Pass Filter with Single Loaded Stub and Compact Structure”, Applied Computational Electromagnetics Society Journal (ACES), 32(11), pp. 1008–1014. Available at: https://journals.riverpublishers.com/index.php/ACES/article/view/9439 (Accessed: 31 May 2026).