Sheldon, M., Williams, E. J., Fischer, D. P., Pfeiffer, D. U., England, G. C., Noakes, D. E., . . . Sheldon, I. (2005). Clinical evaluation of postpartum vaginal mucus reflects uterine bacterial infection and the immune response in cattle. Theriogenology, 63(1), pp. 102-117. doi:10.1016/j.theriogenology.2004.03.017

Sheldon, Martin, Erin J. Williams, Deborah P. Fischer, Dirk U. Pfeiffer, Gary C.W England, David E. Noakes, Hilary Dobson, and I.Martin Sheldon. "Clinical Evaluation of Postpartum Vaginal Mucus Reflects Uterine Bacterial Infection and the Immune Response in Cattle." Theriogenology 63, no. 1 (2005): 102-117.

Sheldon, Martin, et al. "Clinical Evaluation of Postpartum Vaginal Mucus Reflects Uterine Bacterial Infection and the Immune Response in Cattle." Theriogenology 63.1 (2005): 102-117.