CHRISTIANSEN, F. G. Review of Survey activities 2011. GEUS Bulletin, Copenhagen, Denmark, v. 26, p. 1–8, 2012. DOI: 10.34194/geusb.v26.4736. Disponível em: https://geusbulletin.org/index.php/geusb/article/view/4736. Acesso em: 28 sep. 2022.