Song, Guoqiang, Shougao Li, Lisheng Wang, Yin Meng, and Fuxiang Li. 2014. “Direct Synthesis and Characterization of Zr-SBA-15 Mesoporous Molecular Sieves”. Asian Journal of Chemistry 26 (7):1943-47. https://doi.org/10.14233/ajchem.2014.15570.