Swain, J. et al. 2018. Liquid-liquid extraction of Zr(IV) from sulphuric acid medium using tri-n-octyl amine in kerosene. European Journal of Chemistry. 9, 3 (Sep. 2018), 222–227. DOI:https://doi.org/10.5155/eurjchem.9.3.222-227.1719.