BENGTSSON, Kenneth. Ökande antal övervintrande mellanskarvar Phalacrocorax carbo sinensis i Öresund. Ornis Svecica, Lund, Sweden, v. 9, n. 1–2, p. 23–34, 1999. DOI: 10.34080/os.v9.22913. Disponível em: https://journals.lub.lu.se/os/article/view/22913. Acesso em: 18 juli. 2024.