KOHLER, Ulrich. Surveys from inside: An assessment of unit nonresponse bias with internal criteria. Survey Research Methods, [S. l.], v. 1, n. 2, p. 55–67, 2007. DOI: 10.18148/srm/2007.v1i2.75. Disponível em: https://ojs.ub.uni-konstanz.de/srm/article/view/75. Acesso em: 19 apr. 2024.