CIERESZKO, A.; KOWALCZYK, A.; LUKASZEWICZ, E.; KRZYWINSKI, A.; KOBUS, A.; DIETRICH, G. J. Sperm characteristics of male hybrid from a cross between male Black Grouse Tetrao tetrix and female Capercaillie T. urogallus. Ornis Fennica, [S. l.], v. 86, n. 4, p. 149–152, 2009. Disponível em: https://ornisfennica.journal.fi/article/view/133736. Acesso em: 18 may. 2024.