RYTTMAN, H.; HALL-KARLSSON, K. S. S. Brood size of four titmice (Paridae) during 1962–2001. Ornis Svecica, Lund, Sweden, v. 20, n. 2, p. 57–62, 2010. DOI: 10.34080/os.v20.22639. Disponível em: https://journals.lub.lu.se/os/article/view/22639. Acesso em: 10 dec. 2022.