Hart, Terry. More Evidence for Copyright ProtectionArchived February 5, 2012, at the Wayback Machine, copyhype.com, February 1, 2012. "The literature review looked at a 23rd study but did not classify it here since the author presented a mixed conclusion: the overall effect of unauthorized downloads is insignificant, but for unknown artists, there is a 'strongly negative' effect on recorded music sales."
Röttgers, Janko (July 26, 2003). "Bittorrent-Webseiten unter Druck" [Bittorrent websites under pressure] (in German). heise online. Archived from the original on October 16, 2019. Retrieved October 16, 2019.
Hammond. Robert G. "Profit Leak? Pre-Release File Sharing and the Music IndustryArchived May 23, 2012, at the Wayback Machine" May 2012. File sharing benefits mainstream albums such as pop music but not albums in niche genres such as indie music. ... Further, the finding that file sharing redistributes sales toward established/popular artists is inconsistent with claims made by proponents of file sharing that file-sharing democratizes music consumption."
Röttgers, Janko (July 26, 2003). "Bittorrent-Webseiten unter Druck" [Bittorrent websites under pressure] (in German). heise online. Archived from the original on October 16, 2019. Retrieved October 16, 2019.
Hart, Terry. More Evidence for Copyright ProtectionArchived February 5, 2012, at the Wayback Machine, copyhype.com, February 1, 2012. "The literature review looked at a 23rd study but did not classify it here since the author presented a mixed conclusion: the overall effect of unauthorized downloads is insignificant, but for unknown artists, there is a 'strongly negative' effect on recorded music sales."
Hammond. Robert G. "Profit Leak? Pre-Release File Sharing and the Music IndustryArchived May 23, 2012, at the Wayback Machine" May 2012. File sharing benefits mainstream albums such as pop music but not albums in niche genres such as indie music. ... Further, the finding that file sharing redistributes sales toward established/popular artists is inconsistent with claims made by proponents of file sharing that file-sharing democratizes music consumption."