TRACY, D. S.; OSAHAN, S. S. Random non-response on study variable versus on study as well as auxiliary variables. Statistica, [S. l.], v. 54, n. 2, p. 163–168, 1994. DOI: 10.6092/issn.1973-2201/1004. Disponível em: https://rivista-statistica.unibo.it/article/view/1004. Acesso em: 7 may. 2024.