
http://www.cesifo-group.de/ifoHome/publications/working-papers/CESifoWP/CESifoWPdetails?wp_num=6430&CESifoWP.search=+

https://ec.europa.eu/competition/publications/reports/kd0419345enn.pdf

https://www.openmarketsinstitute.org/publications/after-the-midterms-in-a-divided-nation-antimonopoly-is-key-to-a-lasting-majority