1. IFPI: Digital Music Report 2009. Technical report, IFPI (2009)
2. RIAA: 2008 Year-End Shipment Statistics (2008)
3. Electronic Frontier Foundation: RIAA v The People: Five years later (2008)
4. United States Court of Appeals for the Ninth Circuit: A&M Records, Inc., et al. v. Napster, Inc. Nr. 00-16401 (2000)
5. Fader, P.S.: Expert Report. A&M Records, Inc. et al. v. Napster, Inc. 114 F. Supp. 2d 896 (2000)