1. Global potential of rare earth resources and rare earth demand from clean technologies;Zhou;Minerals,2017
2. Recycling of rare earths: a critical review;Binnemans;J Clean Prod,2013
3. European Commission. Communication from the Commission to the European Parliament, the Council, the European economic and social Commitee and the Commitee of the Regions on the 2017 list of Critical Raw Materials for the EU EN. Brussels; 2017.
4. US Geological Survey. Rare earths. 〈http://dx.doi.org/10.3133/70180197〉; 2017.
5. Sustainability evaluation of essential critical raw materials: cobalt, niobium, tungsten and rare earth elements;Tkaczyk;J Phys D Appl Phys,2018