Gravenor, M., Gravenor, M. B., Cox, D. R., Hoinville, L. J., Hoek, A., & McLean, R. (2001). The flock-to-flock force of infection for scrapie in Britain. Proceedings of the Royal Society B: Biological Sciences, 268(1467), pp. 587-592. doi:10.1098/rspb.2000.1462

Gravenor, Michael, M. B. Gravenor, D. R. Cox, L. J. Hoinville, A. Hoek, and R. McLean. "The Flock-to-flock Force of Infection for Scrapie in Britain." Proceedings of the Royal Society B: Biological Sciences 268, no. 1467 (2001): 587-592.

Gravenor, Michael, et al. "The Flock-to-flock Force of Infection for Scrapie in Britain." Proceedings of the Royal Society B: Biological Sciences 268.1467 (2001): 587-592.