Jiang, H., L. Huang, Y. Wei, B. Wang, H. Wu, Y. Zhang, H. Liu, and S. Dou. “Bio-Derived Hierarchical Multicore–Shell Fe2N-Nanoparticle-Impregnated N-Doped Carbon Nanofiber Bundles: A Host Material for Lithium-/Potassium-Ion Storage”. Nano-Micro Letters, vol. 11, July 2019, p. 56, doi:10.1007/s40820-019-0290-0.