SUMMERS, Ronald W; SMITH, Malcolm M. An age-related difference in the size of the nasal glands of Brent Geese Branta bernicla. Wildfowl, [S. l.], p. 35–37, 1990. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154058. Acesso em: 17 dec. 2025.