Extraction and separation of La(III), Pr(III) and Nd(III) using binary mixture of D2EHPA with Cyanex272, TOPO, and TBP extractantsAkram Tofighi Naeem, Eslam Kashi, Mohammad Ali Salehi and Razieh HabibpourMetall. Res. Technol., 115 6 (2018) 612DOI: https://doi.org/10.1051/metal/2018043