https://www.cesifo.org/DocDL/cesifo1_wp7982.pdf
https://www.tandfonline.com/doi/epdf/10.1080/13501763.2023.2236654
https://lawliberty.org/forum/free-trades-origin-myth/
https://ukandeu.ac.uk/the-uk-internal-market-bill-breaking-law-and-reputation/?mc_cid=7627d659c2&mc_eid=815b1928ec