Yujun, M., S. Shuyuan, L. qi, and L. Weixin. “Brand Management and Core Competitiveness Enhancement of Mining Companies”. Journal of Mines, Metals and Fuels, vol. 66, no. 9, Oct. 2022, pp. 724-7, http://informaticsjournals.com/index.php/jmmf/article/view/31790.