ZELEI, A. On the design of numerical filters. Annals of Geophysics, [S. l.], v. 24, n. 4, p. 458–495, 1971. DOI: 10.4401/ag-5163. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/5163. Acesso em: 27 oct. 2021.