Zhang, Xiang-Lin, Hong-Tao Yang, and Na Liu. “Study of Pore Fractal Structure and Combustion Performance on Efficient Compound Coal”. Asian Journal of Chemistry 25, no. 10 (May 3, 2013): 5869–5873. Accessed June 30, 2024. https://asianpubs.org/index.php/ajchem/article/view/25_10_165.