@article{
  author = {Ataie, , O, Salasel,, بهرام, Mehrabi, A.},
  title = {A study on the possible effects of administration of
human chorionic gonadotrophin, at 5th day after AI,
to improve conception rate and serum progesterone
concentration in Holstein dairy cattle},
  journal = {journal of veterinary clinical research},
  year = {2010},
  volume = {2},
  number = {1},
  pages = {39-45},
  doi = {}
}