KOUSHA, K.; THELWALL, M. Web indicators for research evaluation. Part 3: books and non standard outputs. Profesional de la Información, [S. l.], v. 24, n. 6, p. 724–736, 2015. DOI: 10.3145/epi.2015.nov.04. Disponível em: https://revista.profesionaldelainformacion.com/index.php/EPI/article/view/epi.2015.nov.04. Acesso em: 1 dic. 2021.