Deng, S., K. Zhang, D. Xie, Y. Zhang, Y. Zhang, Y. Wang, J. Wu, X. Wang, H. J. Fan, X. Xia, and J. Tu. “High-Index-Faceted Ni3S2 Branch Arrays As Bifunctional Electrocatalysts for Efficient Water Splitting”. Nano-Micro Letters, vol. 11, Feb. 2019, p. 12, doi:10.1007/s40820-019-0242-8.