7Wittmann G, Rziha H J. Herpesvirus disease of cattle, horses,and pigs. In: Developments in Veterinary Virology. Boston,Kluwer Academic Publishers: 230-325
8Vannier P, Hutet E, Bourgueil E, et al. Level of virulent virus excreted by infected pigs previously vaccinated with different glycoprotein deleted Aujeszky's disease vaccines[J]. Veterinary Microbiolgy, 1991, 29 :213-223.
9Wardley R C, Thomsen D R, Berlinski P J,et al. Immune response in pigs to Aujeszky's disease vaccine defective in glycoprotein gI or gX[J]. Res Vet Sci,1991, 50: 178- 184.
10Lomniczi B, Shozo W. Genome location and identification of functions defective in the Bartha vaccine of pseudorabies virus[J]. Journal of Virology, 1987, 61(3): 796-801.