NESSET, Tore; EGEBERG, Erik. Dedication to Professor Lennart Lönngren on the occasion of his 60th birthday. Poljarnyj vestnik, Tromsø, Norway, v. 5, p. 3, 2002. DOI: 10.7557/6.1404. Disponível em: https://septentrio.uit.no/index.php/vestnik/article/view/1404. Acesso em: 14 jun. 2026.