Liu, Wenfeng, et al. “Evolution of Pyrolysis Characteristics and Gas Components of Biochar Prepared by Either Mixing or Layering Rice Husk With Inert Aluminum Oxide”. BioResources, vol. 18, no. 1, Jan. 2023, pp. 1699-13, https://ojs.bioresources.com/index.php/BRJ/article/view/22394.