design of multiband reflectors adapting the concept of stack. Baghdad Science Journal, Iraq, Baghdad, v. 2, n. 2, p. 253–259, 2005. DOI: 10.21123/bsj.2005.609. Disponível em: https://bsj-ojs.uobaghdad.edu.iq/index.php/BSJ/article/view/609.. Acesso em: 29 jul. 2025.