UMBREIT, A. Chapter 4. The places of Franz Josef Land: current visits and imagery. Septentrio Conference Series, Tromsø, Norway, n. 3, p. 30–46, 2015. DOI: 10.7557/5.3581. Disponível em: https://septentrio.uit.no/index.php/SCS/article/view/3581. Acesso em: 4 may. 2024.