Buckland, P. C., og D. W. Perry. “Ectoparasites of Sheep from Stdraborg, Iceland and Their Interpretation: Piss, Parasites and People, a Palaeoecological Perspective”. Hikuin, bd. 15, nr. 15, oktober 1989, s. 37-46, https://tidsskrift.dk/Hikuin/article/view/150609.