Tian, H., L. Zeng, Y. Huang, Z. Ma, G. Meng, L. Peng, C. Chen, X. Cui, and J. Shi. “In Situ Electrochemical Mn(III)/Mn(IV) Generation of Mn(II)O Electrocatalysts for High-Performance Oxygen Reduction”. Nano-Micro Letters, vol. 12, Aug. 2020, p. 161, doi:10.1007/s40820-020-00500-7.