Sheldon, M., Sheldon, I. M., Lewis, G. S., LeBlanc, S., & Gilbert, R. O. (2006). Defining postpartum uterine disease in cattle. Theriogenology, 65(8), pp. 1516-1530. doi:10.1016/j.theriogenology.2005.08.021

Sheldon, Martin, I. Martin Sheldon, Gregory S. Lewis, Stephen LeBlanc, and Robert O. Gilbert. "Defining Postpartum Uterine Disease in Cattle." Theriogenology 65, no. 8 (2006): 1516-1530.

Sheldon, Martin, et al. "Defining Postpartum Uterine Disease in Cattle." Theriogenology 65.8 (2006): 1516-1530.