//-->
Direct memberships in foreign copyright collecting societies as an entrepreneurial opportunity for music publishers – needs, challenges, opportunities and solutions
Klingner, Stephan, (2021)
Komponentenbasiertes Produktivitätscontrolling komplexer Dienstleistungsportfolios
Böttcher, Martin, (2011)
Service productivity in different industries : an empirical investigation
Klingner, Stephan, (2015)