1.
Söderholm S. Does the Pochard Aythya ferina vary periodically?—an analysis of census data from Angarnsjöängen, Sweden 1978—2003 and Lake Engure, Latvia 1972—1992. Ornis Svec [Internet]. 2006 Jul. 1 [cited 2024 Apr. 25];16(3):85-94. Available from: https://journals.lub.lu.se/os/article/view/22712