RINKEN, S.; DOMÍNGUEZ-ÁLVAREZ, J.-A. .; TRUJILLO, M.; LAFUENTE, R.; SOTOMAYOR, R.; SERRANO-DEL-ROSAL, R. Combined mobile-phone and social-media sampling for web survey on social effects of COVID-19 in Spain. Survey Research Methods, [S. l.], v. 14, n. 2, p. 165–170, 2020. DOI: 10.18148/srm/2020.v14i2.7733. Disponível em: https://ojs.ub.uni-konstanz.de/srm/article/view/7733. Acesso em: 2 oct. 2023.