1. G. Zorpette, ``What Is Tesla's Mystery Magnet?'', http://spectrum.ieee.org/permanent-magnet-tesla, IEEE Spectrum (2023)
2. X. Lim ``Global Initiative Mines Retired Hard Disk Drives for Materials and Magnets'', http://spectrum.ieee.org/making-new-hard-disk-drives-from-recycled-magnets, IEEE Spectrum (2019)
3. B.J. Smith, M.E. Riddle, M.R. Earlam, C. Iloeje, D. Diamond, Rare Earth Permanent Magnets: Supply Chain Deep Dive Assessment, http://www.energy.gov/sites/default/files/2022-02/Neodymium%20Magnets%20Supply%20Chain%20Report%20-%20Final.pdf, U.S. Department of Energy, 2022
4. P. Alves Dias, S. Bobba, S. Carrara, B. Plazzotta, The Role of Rare Earth Elements in Wind Energy and Electric Mobility, EUR 30488 EN, Publications Office of the European Union, Luxembourg 2020, JRC122671
5. S. Carrara, S. Bobba, D. Blagoeva et al., Supply Chain Analysis and Material Demand Forecast in Strategic Technologies and Sectors in the EU -- A Foresight Study, Publications Office of the European Union, Luxembourg 2023, JRC132889