H. . T. John Ali, A. prof. H. . A. Ammar, و prof. H. . A. Yasser, "Preparation of Ni-Ferrite Samples for Absorbing Spectrum of X-Band Waves Using Network Analyzer Method", Mustansiriyah.J.Sci.Edu, م 16, عدد 1, ص 65–80, 2020.