1. 1.Gül Y. Geviş Getiren Hayvanların İç Hastalıkları. Medipres Yayıncılık, Malatya. 2006; s 189-238.
2. 2.Virtala, A.M.K, Mechor, G.D., Grohn, Y.T., Erb, H.N., Dubovi, E.J.: Epidemiologic and pathologic characteristics of respiratory tract disease in diary heifers during the first three months of life. J.A.V.M.A. 1996; 208(12): 2035.
3. 3.Ellis J, Waldner C, Gow S, Jackson M. Relationship of the extent of pulmonary lesions to the partial pressure of oxygen and the lactate concentration in arterial blood in calves experimentally infected with bovine respiratory syncytial virus. Can J Vet Res 2013; 77(33):205-210.
4. 4.Houe H. Epidemiologicial features and econimical importance of bovine virus diarrhoea virus (BVDV) infections. Vet Microbiol 1999; 64(2):89-107.
5. 5.Moerman A, Straver PJ, De Jong MCM, et al. Clinical consequences of a bovine virus diarrhoea virüs infection in a dairy herd: A longitudinal study. Vet Q 1994; 16:115-119.