SUNDARABABU, A.; BALASUBRAMANIAN, N. Symmetrical parallel RC Multiple-T Frequency Combinations. Defence Science Journal, [S. l.], v. 16, n. 1, p. 7–12, 2014. DOI: 10.14429/dsj.16.7339. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/7339. Acesso em: 16 jun. 2025.