Palmarini, M., Gray, C. A., Carpenter, K., Fan, H., Bazer, F. W., & Spencer, T. E. (2001). Expression of Endogenous Betaretroviruses in the Ovine Uterus: Effects of Neonatal Age, Estrous Cycle, Pregnancy, and Progesterone. American Society for Microbiology.

Palmarini, Massimo, C. Allison Gray, Karen Carpenter, Hung Fan, Fuller W. Bazer, and Thomas E. Spencer. Expression of Endogenous Betaretroviruses in the Ovine Uterus: Effects of Neonatal Age, Estrous Cycle, Pregnancy, and Progesterone. American Society for Microbiology, 2001.

Palmarini, Massimo, et al. Expression of Endogenous Betaretroviruses in the Ovine Uterus: Effects of Neonatal Age, Estrous Cycle, Pregnancy, and Progesterone. American Society for Microbiology, 2001.