Andersson Åke, Follestad A, Nilsson L, Persson H. Migration patterns of Nordic Greylag Geese Anser anser. Ornis Svec [Internet]. 2001 Apr. 1 [cited 2024 Apr. 19];11(1–2):19-58. Available from: https://journals.lub.lu.se/os/article/view/22859