https://www.veblen-institute.org/IMG/pdf/aubert_hdef.pdf
https://pubs.aeaweb.org/doi/pdfplus/10.1257/jep.37.4.115
https://www.realclearpolitics.com/articles/2022/11/08/avoiding_another_gettysburg_148442.html?utm_source=newsletter&utm_medium=email&utm_campaign=07%2F11%2F2022+++(Copy)
https://www.nuffieldtrust.org.uk/files/2020-07/hospital-building-programme-paper-web-final.pdf