Shang, K., Y.Z. Yang, J.X. Guo, W.J. Lu, F. Liu, and W. Wang. 2011. “Separation of Cobalt and Nickel from Concentrated HCl Solutions by Winsor II Microemulsion System With N235 As Carrier”. Asian Journal of Chemistry 24 (2):546-50. https://asianpubs.org/index.php/ajchem/article/view/8593.