FÄHRÆUS, L. E. Eustasy and Chrono-correlations: Facts and Theories with Examples from the Ordovician. Geoscience Canada, [S. l.], v. 23, n. 2, 1996. Disponível em: https://journals.lib.unb.ca/index.php/GC/article/view/3898. Acesso em: 2 jul. 2020.