Xie, W., J. Li, Y. Song, S. Li, J. Li, and M. Shao. “Hierarchical Carbon Microtube@Nanotube Core–Shell Structure for High-Performance Oxygen Electrocatalysis and Zn–Air Battery”. Nano-Micro Letters, vol. 12, Apr. 2020, p. 97, doi:10.1007/s40820-020-00435-z.