1. Characterization of a herpesvirus isolated from spontaneously degenerated bovine kidney cell culture;Belak;Acta Vet. Hung.,1974
2. Methods of adjustment for estimating the attributable risk in case-control studies: a review;Benichou;Stat. Med.,1991
3. Reactivation in calves of latent infection by bovid herpesvirus-4;Castrucci;Microbiologica,1987
4. The isolation and characterization of a new bovine herpesvirus associated with abortion;Crandell;Theriogenology,1976
5. Epi Info, Version 5: A Word Processing, Database and Statistics Program for Epidemiology on Micro-computers,1990