REES, Eileen C.; CLAUSEN, Preben. Swan research and conservation: a synthesis of information presented at the 7th International Swan Symposium. Wildfowl, [S. l.], p. 1–26, 2024. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/156353. Acesso em: 16 dec. 2025.