1. Babcock, O.G. and Black, W.L., 1933. The common sheep scab mite and its control.Texas Agricultural Experiment Station Bulletin,479, 1–34
2. Bedford, G.A.H., 1915.3rd and 4th Reports of the Directors of Veterinary Research, Department of Agriculture Union of South Africa, 1–99
3. Boyce, W.M. and Brown, R.N., 1991. Antigenic characterization ofPsoroptes spp. (Acari, Psoroptidae) mites from different hosts.Journal of Parasitology,77, 675–679
4. Delafond, O. and Bourguignon, H., 1856. Resultats des recherches enterprises sur la gale au mouton.Recueil de Medicine Veterinaire,111, 98–114, 171–182, 321–335
5. Evans, R.P. and Kirkwood, A.C., 1984. Sheep scab = cattle scab.Veterinary Record,114, 459