NIELSEN, Bo. Age dependent variation in wing length of Bearded Tits Panurus biarmicus. Ornis Svecica, Lund, Sweden, v. 3, n. 3–4, p. 117–124, 1993. DOI: 10.34080/os.v3.23036. Disponível em: https://journals.lub.lu.se/os/article/view/23036. Acesso em: 25 feb. 2024.