Namahoot, A., S. Chalermwisutkul, and P. Akkaraekthalin. “Ultra-Wideband 1–20 GHz Non-Contact FMR Test System for TMR HGA”. Applied Science and Engineering Progress, vol. 14, no. 2, Mar. 2021, pp. 284-9, doi:10.14416/j.asep.2019.09.005.