
https://www.sipri.org/sites/default/files/2025-03/fs_2503_at_2024_0.pdf

https://ourfinancialsecurity.org/wp-content/uploads/2023/01/1.6.23-Subprime-Corporate-Debt-A-Giant-in-the-Shadows.pdf

http://www.guengl.eu/uploads/news-documents/Working_paper_Border_controls_on_cross_border_trade_in_goods.pdf