1. Major Aircraft Disasters, information available at: 〈http://dnausers.d-n-a.net/dnetGOJG/Disasters.htm〉.
2. AIM, Accelerated Insertion of Materials Program, DSO Office, DARPA, information available at: 〈http://www.darpa.mil/dso/thrust/matdev/aim.htm〉.
3. Prognosis, Prognosis Program, DSO Office, DARPA, information available at: 〈http://www.arpa.mil/dso/thrust/matdev/prognosis.htm〉.
4. National Security Assessment of the U.S. Forging Industry, Bureau of Industry and Security, U.S. Department of Commerce 〈https://www.bis.doc.gov/defenseindustrialbaseprograms/osies/〉.
5. MAI, Metals Affordability Initiative, AFRL/ML, information available at: 〈http://www.wrs.afrl.af.mil/contract/〉.