Torres-Salinas, Daniel, and Álvaro Cabezas-Clavijo. “Tools for Evaluating Science in Universities and R&D Centres: Descriptions and Usage”. Anuario ThinkEPI, vol. 6, Oct. 2012, pp. 142-6, https://thinkepi.scimagoepi.com/index.php/ThinkEPI/article/view/30406.