NILSSON, Leif; KAMPE-PERSSON, Hakon. Changes in numbers of staging and wintering geese in Sweden 1977/78–2019/20. Wildfowl, [S. l.], p. 107–126, 2020. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154570. Acesso em: 16 dec. 2025.