Fauzy, R., Adi, W., Taryana, Y., & Yusmaniar, Y. (2018). Effect of Silica Composition from Rice Husk Ash on The Performace of Absorbing Electromagnetic Wave on Composite of Unsaturated Polyester Resins/Silica. Jurnal ILMU DASAR, 19(1), 7-16. doi:10.19184/jid.v19i1.6336