S.B.Almabrok, M.M.Abulaweenat, and Y.A.Abdulkarim, “Study Of the Effect of Operating Frequency on The Needle Antenna Used in The Treatment Hepatic Tumors by Microwave ”, JOPAS, vol. 21, no. 4, pp. 121–127, Oct. 2022, doi: 10.51984/jopas.v21i4.2136.