1.
Nilsson L. Changes in numbers and distribution of wintering Long-tailed Ducks Clangula hyemalis in Swedish waters during the last fifty years. Ornis Svec [Internet]. 2016 Oct. 1 [cited 2024 Dec. 12];26(3–4):162–176. Available from: https://journals.lub.lu.se/os/article/view/21855