STADTMÜLLER, Sven. Desirable and Undesirable Effects of Monetary Incentives in Mail Surveys. methods, data, analyses, [S. l.], v. 3, n. 2, p. 167–185, 2009. DOI: 10.12758/mda.2009.011. Disponível em: https://majournals.bib.uni-mannheim.de/mda/article/view/2009.011. Acesso em: 8 oct. 2025.