Ibrahim Abbas, Sabah, and Abbas Salam Khamas. “Study of the Permittivity, Permeability and Microwave Attenuation of Zinc Ferrites Nanoparticles Prepared by Sol-Gel Methods”. International Journal of Engineering & Technology, vol. 7, no. 4, Aug. 2019, pp. 7056-62, https://doi.org/10.14419/ijet.v7i4.19985.