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

https://www.bruegel.org/sites/default/files/2023-04/PB%2009%202023_0.pdf

https://www.transparency.de/fileadmin/Redaktion/Publikationen/2019/19-09-01_TI-D_Gutachten_Momsen.pdf