Machado, Carla Jorge, e Mark Drew Crosland Guimarães. 2012. “On the Issue of Homophily in Respondent-Driven Sampling: Notes Based on the Case of Men Who Have Sex With Men in Belo Horizonte, Brazil”. Revista Brasileira De Estudos De População 29 (2):493-96. https://rebep.emnuvens.com.br/revista/article/view/44.