ROBERTS, Caroline; VANDENPLAS, Caroline; ERNST STÄHLI, Michèle. Evaluating the impact of response enhancement methods on the risk of nonresponse bias and survey costs. Survey Research Methods, [S. l.], v. 8, n. 2, p. 67–80, 2014. DOI: 10.18148/srm/2014.v8i2.5459. Disponível em: https://ojs.ub.uni-konstanz.de/srm/article/view/5459. Acesso em: 20 apr. 2024.