HEMMINGSEN SCHOVSBO, N.; THORSHØJ NIELSEN, A.; KLITTEN, K.; MATHIESEN, A.; RASMUSSEN, P. Shale gas investigations in Denmark: Lower Palaeozoic shales on Bornholm. GEUS Bulletin, Copenhagen, Denmark, v. 23, p. 9–12, 2011. DOI: 10.34194/geusb.v23.4794. Disponível em: https://geusbulletin.org/index.php/geusb/article/view/4794. Acesso em: 28 jun. 2022.