Saeed Roshani, A. R. Golestanifar, A. H. Ghaderi, and Sobhan Roshani. “A Miniaturized LPF With Sharp Transition-Band Using Semi-Circle Resonators”. Applied Computational Electromagnetics Society Journal (ACES), vol. 32, no. 04, Aug. 2021, pp. 344-51, https://journals.riverpublishers.com/index.php/ACES/article/view/9661.