KUNZ, Franziska. Follow-Ups in Mail Surveys. Empirical Findings on the Effects on the Response Rate, the Responses and the Sample Composition. methods, data, analyses, [S. l.], v. 4, n. 2, p. 127–155, 2010. DOI: 10.12758/mda.2010.009. Disponível em: https://majournals.bib.uni-mannheim.de/mda/article/view/2010.009. Acesso em: 8 oct. 2025.