HVIDTFELDT CHRISTIANSEN, Hanne. Open System Pingos in Mellemfjord, Disko, Central West Greenland: A Reply to Gurney and Worsley. Geografisk Tidsskrift, [S. l.], v. 97, 1997. Disponível em: https://tidsskrift.dk/geografisktidsskrift/article/view/42080. Acesso em: 5 dec. 2025.