Luo, J., X. Dai, S. Bai, Y. Jin, Z. Ye, and X. Guo. “Ligand Exchange of Colloidal ZnO Nanocrystals from the High Temperature and Nonaqueous Approach”. Nano-Micro Letters, vol. 5, no. 4, Nov. 2013, pp. 274-80, doi:10.1007/BF03353758.