Stewart, I.R.K., Ringsby, T.H. and Solberg, E.J. (1997) “Absence of haematozoa in passerines from a Norwegian archipelago”, Ornis Fennica, 74(4), pp. 201–203. Available at: https://ornisfennica.journal.fi/article/view/133475 (Accessed: 16 December 2025).