HELMSCHROTT, Susanne; MARTIN, Silke. Nonresponse in PIAAC Germany. methods, data, analyses, [S. l.], v. 8, n. 2, p. 243–266, 2014. DOI: 10.12758/mda.2014.010. Disponível em: https://majournals.bib.uni-mannheim.de/mda/article/view/2014.010. Acesso em: 8 may. 2026.