Eriksson, Mats O G, Tomas Dahlgren, Arne Holmer, Peter Lindberg, and Matti Åhlund. “Breeding Success of the Black-Throated Diver Gavia Arctica Inside and Outside Bird Sanctuaries in Lakes Fegen and Sottern”. Ornis Svecica 15, no. 4 (October 1, 2005): 212–219. Accessed February 25, 2024. https://journals.lub.lu.se/os/article/view/22728.