
https://www.brookings.edu/blog/future-development/2018/04/03/the-middle-productivity-trap-why-are-less-productive-firms-systematically-lagging-behind/?utm_campaign=Brookings%20Brief&utm_source=hs_email&utm_medium=email&utm_content=61867197

https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/852960/brydon-review-final-report.pdf

https://ecipe.org/wp-content/uploads/2023/10/ECI_23_PolicyBrief_12-2023_LY02.pdf?_gl=1*1g7eldw*_up*MQ..*_ga*MTc3MzcyMDM2My4xNjk4NDc0NjY4*_ga_T9CCK5HNCL*MTY5ODQ3NDY2OC4xLjAuMTY5ODQ3NDY2OC4wLjAuMA..