Ge, Tao, Mingxu Zhang, and Chuanchuan Cai. “XPS Analysis of Surface Texture of Coking Coal in Fenxi County”. Asian Journal of Chemistry 26, no. 6 (March 12, 2014): 1741–1744. Accessed July 23, 2024. https://asianpubs.org/index.php/ajchem/article/view/26_7_52.