
https://www.bain.com/globalassets/noindex/2021/bain_report_enr_report_2021.pdf

https://www.openmarketsinstitute.org/publications/sling-de-economizing-antitrust-law-starts-with-market-definition

http://www.oecd.org/eco/outlook/economic-forecast-summary-united-kingdom-oecd-economic-outlook-june-2017.pdf