Qin, Yuancheng, Qiang Peng, and Jinsheng Song. 2012. “Preparation of Polyhedral Oligosilsesquioxane-Based Organic-Inorganic Hybrid Porous Nanocomposite by Freeze-Drying Conditions”. Asian Journal of Chemistry 25 (3):1229-32. https://doi.org/10.14233/ajchem.2013.12609.