1. Test methods for Giardia cysts and Cryptosporidium oocysts in low-turbidity water by a fluorescent antibody procedure (ASTM P229);American Society for Testing and Materials,1991
2. The effectiveness of doramectin pour-on in the control of gastrointestinal nematode infections in cow-calf herds;Ballweber;Vet. Parasitol.,2000
3. Burnham, K.P., Anderson, D.R., 2002. Model Selection and Multimodel Inference: A Practical Information-Theoretical Approach. Second edition, Springer-Verlag, New York, New York, 488 pp.
4. Clark, L., McLean, R.G., 2003. A review of pathogens of agricultural and human health interest found in blackbirds. In: Linz, G.M. (Ed.), Proceedings of Symposium on Management of North American Blackbirds, 103-108. USDA/APHIS /WS, National Wildlife Research Center, Fort Collins, CO.
5. Duszynski, D.W., Upton, S.J., Couch, L., 1999. Coccidia of Passeriformes (Eimeria spp.). Available from: http://biology.unm.edu/biology/coccidia/passer.html (accessed 03.12.09.).