Hidayat, Nurul, Ahmad Taufiq, Sunaryono Sunaryono, Samsul Hidayat, Heriyanto Heriyanto, and Era Budi Prayekti. “Combination of Coprecipitation and Sonochemical Methods in Synthesizing Spinel Hausmannite Nanomaterial”. Jurnal Penelitian Fisika dan Aplikasinya (JPFA) 8, no. 1 (June 28, 2018): 1–9. Accessed May 2, 2024. https://journal.unesa.ac.id/index.php/jpfa/article/view/1683.