ZHANG, SHENG-TAO, and GUO-QING ZHANG. 2010. “Enhanced Performance of Nano Γ-MnO2 Mesocarbon Microbeads Composite As Electrocatalyst for Solid State Zinc-Air Cells”. Asian Journal of Chemistry 21 (6):4617-27. https://asianpubs.org/index.php/ajchem/article/view/18209.