Alexandre S. Guimarães and  Marcelo B. Mansur,  Selective Solvent Extraction of Calcium and Magnesium from Concentrate Nickel Solutions Using Mixtures of Cyanex 272 and D2EHPA.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2016, vol. 113(5). 515 - 518
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/10004297.