BOTTAI, Matteo. Use of natural cubic splines for modeling pulmonary function in longitudinal epidemiological studies. Statistica, [S. l.], v. 61, n. 1, p. 165–171, 2001. DOI: 10.6092/issn.1973-2201/1171. Disponível em: https://rivista-statistica.unibo.it/article/view/1171. Acesso em: 18 dec. 2024.