Adopting the rights-based model: music multinationals and local music industries since 1945 - Gerben Bakker

https://pdfs.semanticscholar.org/45a9/6fd07421bf3e471587524a80524108ae3733.pdf


see also:


The Making of a Music Multinational: PolyGram's international businesses, 1945-1998 - Gerben Bakker
https://www.cambridge.org/core/journals/business-history-review/article/making-of-a-music-multinational-polygrams-international-businesses-19451998/8B937B14E2FA53109B835B2684E0B798


this has been found as reference on the Wikipedia article on PolyGram
https://en.m.wikipedia.org/wiki/PolyGram