CERNAT, Alexandru. Impact of mixed modes on measurement errors and estimates of change in panel data. Survey Research Methods, [S. l.], v. 9, n. 2, p. 83–99, 2015. DOI: 10.18148/srm/2015.v9i2.5851. Disponível em: https://ojs.ub.uni-konstanz.de/srm/article/view/5851. Acesso em: 28 mar. 2024.