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58. M.L. Firmansyah, ATN Fajar, RR Mukti, T Ilmi, GTM Kadja, M Goto. “Recovery of Cobalt and Manganese from Spent Lithium-ion Batteries using a Phosphonium-based Ionic Liquid”. Solvent Extraction Research and Development, Japan 28 (1), 79-93 (2021).
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