BENSCH, S.; KÄLLANDER, H. Survival and fledgling production in Black-headed Gulls Larus ridibundus. Ornis Svecica, Lund, Sweden, v. 7, n. 1, p. 37–39, 1997. DOI: 10.34080/os.v7.22978. Disponível em: https://journals.lub.lu.se/os/article/view/22978. Acesso em: 1 oct. 2022.