Gharsallah, A., and A. . Gharbi. “Wave Concept Iterative Process Merges With Modal Fast Fourier Transformation to Analyze Microstrip Filters”. Applied Computational Electromagnetics Society Journal (ACES), vol. 16, no. 1, July 2022, pp. 61-67, https://journals.riverpublishers.com/index.php/ACES/article/view/17029.