FAUZY, Rizky et al. 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, [S.l.], v. 19, n. 1, p. 7-16, feb. 2018. ISSN 2442-5613. Available at: <https://jurnal.unej.ac.id/index.php/JID/article/view/6336>. Date accessed: 13 june 2021. doi: https://doi.org/10.19184/jid.v19i1.6336.