1. How to evaluate raw material supply risks—an overview;Achzet;Resour. Policy,2013
2. American Institute of Physics (AIP), 2018a. Science Receives Windfall in Final 2018 Spending Bill. Available at 〈https://www.aip.org/fyi/2018/science-receives-windfall-final-2018-spending-bill〉.
3. American Institute of Physics (AIP), 2018b. FY19 Budget Request: DOE Applied R&D Slashed Again. Available at 〈https://www.aip.org/fyi/2018/fy19-budget-request-doe-applied-rd-slashed-again〉.
4. American Institute of Physics (AIP), 2018c. FY19 Appropriations Bills: DOE Applied R&D. Available at 〈https://www.aip.org/fyi/2018/fy19-appropriations-bills-doe-applied-rd〉.
5. American Physical Society (APS) & Materials Research Society (MRS), 2011. Energy Critical Elements. Washington, D.C. Available at 〈https://www.aps.org/policy/reports/popa-reports/upload/elementsreport.pdf〉.