
https://wiiw.ac.at/digital-tasks-and-ict-capital-methodologies-and-data-dlp-6429.pdf

http://www.bankofengland.co.uk/publications/Documents/speeches/2017/speech992.pdf

https://int.nyt.com/data/documenttools/house-antitrust-report-on-big-tech/b2ec22cf340e1af1/full.pdf