OLSON, Kristen; LEPKOWSKI, James M.; GARABRANT, David H. An Experimental Examination of the Content of Persuasion Letters on Nonresponse Rates and Survey Estimates in a Nonresponse Follow-Up Study. Survey Research Methods, [S. l.], v. 5, n. 1, p. 21–26, 2011. DOI: 10.18148/srm/2011.v5i1.4324. Disponível em: https://ojs.ub.uni-konstanz.de/srm/article/view/4324. Acesso em: 20 jul. 2024.