GRAVESEN, P. Petrography of the quartz sand deposits of the Lower Cretaceous of Bornholm, Denmark. Danmarks Geologiske Undersøgelse Serie A, Copenhagen, Denmark, v. 10, p. 1–24, 1986. DOI: 10.34194/seriea.v10.7029. Disponível em: https://geusjournals.org/index.php/seriea/article/view/7029. Acesso em: 3 jul. 2024.