YOON LEE, Dong. The variation of propagation velocity according to substrate material of band pass filter. International Journal of Engineering & Technology, [S. l.], v. 7, n. 2.33, p. 393–396, 2018. DOI: 10.14419/ijet.v7i2.33.14193. Disponível em: https://www.sciencepubco.com/index.php/ijet/article/view/14193.. Acesso em: 29 apr. 2024.