1. V. Balaram, Geosci. Front. 10(4), 1285 (2019)
2. Z. Zhu, Y. Pranolo, C.Y. Cheng, Miner. Eng. 77, 185 (2015)
3. D.D. Imholte, R.T. Nguyen, A. Vedantam, M. Brown, A. Iyer, B.J. Smith, J.W. Collins, C.G. Anderson, B. O’Kelley, Energy Policy 113, 294 (2018)
4. W. Mercer, R.G. Eggert, Rare-Earth Geology, Mineralogy and Resource Development, (NATO Unclassified Releasable to Aust. PFP Nations, STO-RLS-AVT-285-4, S&T Organ. 4-1 through -19, 2017), pp. 1–22
5. J.R. Goode, “Rare Earth Elements,” in SME Mineral Processing & Extractive Metallurgy Handbook, eds. R.C. Dunne, S.K. Kawatra, C.A. Young (Society for Mining, Metallurgy & Exploration, Englewood, CO, 2019), vol. 2, pp. 2049–2075