PULLIAINEN, E. The invasions of the Kittiwake (Rissa tridactyla) into Finland in February and March 1959 and 1962. Ornis Fennica, [S. l.], v. 39, n. 3, p. 81–96, 1962. Disponível em: https://ornisfennica.journal.fi/article/view/132673. Acesso em: 20 apr. 2025.