Tao Li 
 Multifunktionalität, Monopol und sektorspezifische Aufsicht
 Verwertungsgesellschaften aus interdisziplinärer und rechtsvergleichender Perspektive 
  
[Multi-Functionality, Monopoly and Sector-Specific Supervision. Collecting Societies from Interdisciplinary and Comparative Perspectives.]
 2020. XVIII, 292 pages.    Summary 
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 Collecting societies play an essential role in the copyright system. They work particularly effectively and efficiently when they cover the entire repertoire of creativity. Yet they are also monopolists whose position must be moderated by compulsory contracting and state supervision.