PORTSEL, Aleksandr. The Poliarnaia Kochegarka Newspaper as a Source on the Soviet Mining on Spitsbergen in the 1930–1980s: A Brief Bibliographical Survey. Nordlit, Tromsø, Norway, n. 45, p. 139–149, 2020. DOI: 10.7557/13.4992. Disponível em: https://septentrio.uit.no/index.php/nordlit/article/view/4992. Acesso em: 2 may. 2026.