L. Ekawati, S. Maliki, D. I. Lestari, A. C. Salsabila, and E. Septiani, “Rice Husk–Sugarcane Bagasse-Derived Silica for Methylene Blue Removal in a Fixed-Bed Column: Synthesis and Characterization”, SEAJ, vol. 8, no. 2, pp. 170–179, Sep. 2026.