Cheng, Lijun, Yihua Wang, Hong Xu, Lei Liu, and Jinxiang Dong. “Hydrothermal Synthesis of Birnessite-Type Potassium Manganese Oxide and Its Application As Lubricant in Liquid Paraffin”. Asian Journal of Chemistry 28, no. 4 (December 30, 2015): 883–887. Accessed November 25, 2024. https://asianpubs.org/index.php/ajchem/article/view/28_4_31.