VESNEN, Mikael. The occipital face of the Pygmy Owl Glaucidium passerinum. Ornis Svecica, Lund, Sweden, v. 19, n. 4, p. 193–198, 2009. DOI: 10.34080/os.v20.22644. Disponível em: https://journals.lub.lu.se/os/article/view/22644. Acesso em: 5 may. 2024.