Espírito Santo, Alexandre do, and Richard D. Walker. “Measurement of Scientific Literature: A Review of Methods”. Semina: Ciências Sociais e Humanas 2, no. 7 (November 18, 2010): 149–152. Accessed April 15, 2025. https://ojs.uel.br/revistas/uel/index.php/seminasoc/article/view/7257.