PÄÄKKÖNEN, T. Crowdsourcing metrics of digital collections. LIBER Quarterly: The Journal of the Association of European Research Libraries, [S. l.], v. 25, n. 2, p. 41–55, 2015. DOI: 10.18352/lq.10090. Disponível em: https://liberquarterly.eu/article/view/10675. Acesso em: 19 apr. 2024.