NILSSON, Jan-Åke. Variation in wing length in relation to sex and age of Marsh Tits Parus palustris. Ornis Svecica, Lund, Sweden, v. 2, n. 1, p. 7–12, 1992. DOI: 10.34080/os.v2.23080. Disponível em: https://journals.lub.lu.se/os/article/view/23080. Acesso em: 20 apr. 2024.