HANSEN, M.; PJETURSSON, B. Free, online Danish shallow geological data. GEUS Bulletin, Copenhagen, Denmark, v. 23, p. 53–56, 2011. DOI: 10.34194/geusb.v23.4842. Disponível em: https://geusbulletin.org/index.php/geusb/article/view/4842. Acesso em: 27 jun. 2022.