Sheldon, M., Sheldon, I., Noakes, D. E., Rycroft, A. N., & Dobson, H. (2003). The effect of intrauterine administration of estradiol on postpartum uterine involution in cattle. Theriogenology, 59(5-6), pp. 1357-1371. doi:10.1016/S0093-691X(02)01169-X

Sheldon, Martin, I.Martin Sheldon, David E. Noakes, Andrew N. Rycroft, and Hilary Dobson. "The Effect of Intrauterine Administration of Estradiol On Postpartum Uterine Involution in Cattle." Theriogenology 59, no. 5-6 (2003): 1357-1371.

Sheldon, Martin, et al. "The Effect of Intrauterine Administration of Estradiol On Postpartum Uterine Involution in Cattle." Theriogenology 59.5-6 (2003): 1357-1371.