PAVONE, P.; ROMANO, M. F. Models of text mining to measure improvements to doctoral courses suggested by “STELLA” phd survey respondents. Statistica, [S. l.], v. 73, n. 4, p. 463–475, 2013. DOI: 10.6092/issn.1973-2201/4500. Disponível em: https://rivista-statistica.unibo.it/article/view/4500. Acesso em: 27 jan. 2023.