Nahak, Andreas, Kasimir Sarifudin, and Lolita Parera. 2026. “Study of the Crystal Structure of CaO/SiO₂, MgO/SiO₂, and CaO–MgO/SiO₂ Catalysts”. Jurnal Beta Kimia 6 (1), 96-109. https://doi.org/10.35508/jbk.v6i1.27792.