CHYAD, F.; JABUR, A.; ABED, S. Physical and Morphological Properties of Hard- Soft Ferrite Functionally Graded Materials. Al-Khwarizmi Engineering Journal, [S. l.], v. 14, n. 1, p. 99–107, 2018. DOI: 10.22153/kej.2018.10.007. Disponível em: https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/118. Acesso em: 18 aug. 2022.