LEETARU, K.; WANG, S.; CAO, G.; PADMANABHAN, A.; SHOOK, E. Mapping the global Twitter heartbeat: The geography of Twitter. First Monday, [S. l.], v. 18, n. 5, 2013. DOI: 10.5210/fm.v18i5.4366. Disponível em: https://journals.uic.edu/ojs/index.php/fm/article/view/4366. Acesso em: 25 oct. 2021.