DOU, Y. .; WANG, J. .; CUI, H. .; LI, J.-L. . Miniaturized Microstrip Lowpass Filter with Ultra-Wide Stopband. Applied Computational Electromagnetics Society Journal (ACES), [S. l.], v. 28, n. 07, p. 640–645, 2021. Disponível em: https://journals.riverpublishers.com/index.php/ACES/article/view/11535. Acesso em: 13 may. 2026.