The epidemiology of BSE in cattle herds in Great Britain. I. Epidemiological processes, demography of cattle and approaches to control by culling.
C A Donnelly, N M Ferguson, A C Ghani, M E Woolhouse, C J Watt, and R M Anderson
Philos Trans R Soc Lond B Biol Sci. 1997 July 29; 352(1355): 781–801. PMCID: PMC1691970