CRANDALL, J. R.; CRETE-NISHIHATA, M.; KNOCKEL, J.; MCKUNE, S.; SENFT, A.; TSENG, D.; WISEMAN, G. Chat program censorship and surveillance in China: Tracking TOM-Skype and Sina UC. First Monday, [S. l.], v. 18, n. 7, 2013. DOI: 10.5210/fm.v18i7.4628. Disponível em: https://firstmonday.org/ojs/index.php/fm/article/view/4628. Acesso em: 11 aug. 2022.