https://www.nedo.go.jp/english/activities_ZZJP_100245.html
https://www.fastmarkets.com/insights/rare-earth-magnet-recycling-technology-branches-out/
https://www.csis.org/analysis/consequences-chinas-new-rare-earths-export-restrictions
希土類元素 レアアースДонор
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https://upload.wikimedia.org/wikipedia/commons/7/7c/REE-table.svg
Tmy350
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USGS. Converted to SVG by BMacZero
Public domain
https://upload.wikimedia.org/wikipedia/commons/9/93/Rareearth_production.svg