Classification of cell types in vaginal smears during the canine oestrous cycle.

@article{Christie1972ClassificationOC,
  title={Classification of cell types in vaginal smears during the canine oestrous cycle.},
  author={David William Scott Christie and J. B. Bailey and Elaine T. Bell},
  journal={The British veterinary journal},
  year={1972},
  volume={128 6},
  pages={301-10}
}