Lu, Y., Cang, H., Han, F., Chen, Z., & Xu, Q. (2012). Synthesis and Characterization of Vanadia-Doped Iron-Oxide Pillared Attapulgite Clay for the Selective Catalytic Reduction of Nitrogen Oxides. Asian Journal of Chemistry, 24(12), 5759–5762. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/9982