PAATELA, J.; KAILA, L. On the Expansion of Blyth´s Reed Warbler (Acrocephalus dumetorum) into Finland. Ornis Fennica, [S. l.], v. 37, n. 1–2, p. 1–11, 1960. Disponível em: https://ornisfennica.journal.fi/article/view/132645. Acesso em: 20 apr. 2025.