1. Congenital malformations in sheep;Angus;In Pract.,1992
2. Anonymous, 2012. The Center for Food Security and Public Health, Iowa state University. Akabane Disease. http://www.cfsph.iastate.edu/Factsheets/pdfs/akabane.pdf (accessed 28.02.12).
3. Anonymous, 2013. Friedrich-Loeffler-Institute (FLI), Federal Research Institute for Animal Health, Germany. Schmallenberg Virus. http://www.fli.bund.de/de/startseite/aktuelles/tierseuchengeschehen/schmallenberg-virus.html (accessed 09.04.13).
4. Further observations on swayback. I. Transitional pathology;Barlow;J. Comp. Pathol.,1963
5. Morphogenesis of hydranencephaly and other intracranial malformations in progeny of pregnant ewes infected with pestiviruses;Barlow;J. Comp. Pathol.,1980