Peripheral plasma progesterone levels during the ovine estrous cycle.

@article{Stabenfeldt1969PeripheralPP,
  title={Peripheral plasma progesterone levels during the ovine estrous cycle.},
  author={G. H. Stabenfeldt and John A. G. Holt and Larry L. Ewing},
  journal={Endocrinology},
  year={1969},
  volume={85 1},
  pages={11-5}
}