Hayati, M. ., H. A. . Memari, and H. . Abbasi. “Compact Microstrip Lowpass Filter With Wide Stopband and Sharp Roll-off Using Triple Radial Stubs Resonator”. Applied Computational Electromagnetics Society Journal (ACES), vol. 28, no. 06, Oct. 2021, pp. 513-20, https://journals.riverpublishers.com/index.php/ACES/article/view/11549.