Hassan, Nurul Sahida, and Aishah Abdul Jalil. “Understanding the Effect of the Calcination Process on the Structure of Mesoporous Silica Zirconia Photocatalysts for Bisphenol A Degradation ”. Malaysian Journal of Catalysis, vol. 7, no. 1, Mar. 2023, pp. 26-30, doi:10.11113/mjcat.v7n1.171.