Sarah Legner 
 Schadenstheorien bei Nachfragemacht im europäischen und deutschen Kartellrecht
[Buying Power and the Theory of Harm in European and German Anti-Trust Law.]
 2019. XVI, 223 pages.    Summary 
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 Sarah Legner analyses the impact that buying power has on competition and consumer welfare, revealing that European and German anti-trust laws aim to maximize the later and tend not to protect suppliers.