Psifidi A, Basdagianni Z, Dovas CI, Arsenos G, Sinapis E, Papanastassopoulou M, Banos G. Characterization of the PRNP gene locus in Chios dairy sheep and its association with milk production and reproduction traits. Anim Genet. 2011 Aug;42(4):406–14. doi: 10.1111/j.1365-2052.2010.02159.x. PMID: 21749423.