SCHOVSBO, N. H.; RASMUSSEN, S. L.; SHELDON, E.; STEMMERIK, L. Correlation of carbon isotope events in the Danish Upper Cretaceous chalk. GEUS Bulletin, Copenhagen, Denmark, v. 15, p. 13–16, 2008. DOI: 10.34194/geusb.v15.5032. Disponível em: https://geusbulletin.org/index.php/geusb/article/view/5032. Acesso em: 22 nov. 2024.