Zhang, W., Shen, Q., Hao, Z., & Zou, L. (2010). A study on the synergistic adsorptive and photocatalytic activities of TiO2−xNx/Beta composite catalysts under visible light irradiation. Chemical Engineering Journal, 165(1), pp. 301-309. doi:10.1016/j.cej.2010.08.057

Zhang, Waye, Qun Shen, Zhengping Hao, and Linda Zou. "A Study On the Synergistic Adsorptive and Photocatalytic Activities of TiO2−xNx/Beta Composite Catalysts Under Visible Light Irradiation." Chemical Engineering Journal 165, no. 1 (2010): 301-309.

Zhang, Waye, Qun Shen, Zhengping Hao, and Linda Zou. "A Study On the Synergistic Adsorptive and Photocatalytic Activities of TiO2−xNx/Beta Composite Catalysts Under Visible Light Irradiation." Chemical Engineering Journal 165.1 (2010): 301-309.