CASTIGLIONI, Laura; PFORR, Klaus; KRIEGER, Ulrich. The Effect of Incentives on Response Rates and Panel Attrition: Results of a Controlled Experiment. Survey Research Methods, [S. l.], v. 2, n. 3, p. 151–158, 2008. DOI: 10.18148/srm/2008.v2i3.599. Disponível em: https://ojs.ub.uni-konstanz.de/srm/article/view/599. Acesso em: 18 apr. 2024.