HILTON III, John. From PDF to MP3: Motivations for creating derivative works. First Monday, [S. l.], v. 14, n. 9, 2009. DOI: 10.5210/fm.v14i9.2560. Disponível em: https://firstmonday.org/ojs/index.php/fm/article/view/2560. Acesso em: 26 sep. 2023.