Gong, Wenzhao, et al. “Core/Shell/and/Multi-Scale/Structures/Enhance/the/Electrocatalytic/Oxygen/Reduction/Reaction/of/the/PdSn@Graphene/Nano-Composites/in/an/Alkaline/Condition”. Asian Journal of Chemistry, vol. 24, no. 10, May 2012, pp. 4579-82, https://asianpubs.org/index.php/ajchem/article/view/9712.