KUPIS-FIJAŁKOWSKA, Aleksandra. Selected Problems of Quality Assessment in Internet Surveys – a Statistical Perspective. Acta Universitatis Lodziensis. Folia Oeconomica, [S. l.], v. 4, n. 349, p. 47–66, 2020. DOI: 10.18778/0208-6018.349.03. Disponível em: https://czasopisma.uni.lodz.pl/foe/article/view/3996. Acesso em: 2 feb. 2025.