*[https://www.hoover.org/sites/default/files/research/docs/HAHWGWorkingPaper-202502-Ferguson%27s%20Law-Final.pdf Debt Service, Military Spending, and the Fiscal Limits of Power by Niall Ferguson (British historian and Chairman, Hoover Applied History Working Group). Hoover Institution, Stanford University. History Working Paper 202502, Hoover Institution, February 21, 2025] | *[https://www.hoover.org/sites/default/files/research/docs/HAHWGWorkingPaper-202502-Ferguson%27s%20Law-Final.pdf Debt Service, Military Spending, and the Fiscal Limits of Power by Niall Ferguson (British historian and Chairman, Hoover Applied History Working Group). Hoover Institution, Stanford University. History Working Paper 202502, Hoover Institution, February 21, 2025] |