Conception Rate of Lactating Dairy Cows Using Ovsynch After Presynchronization With Prostaglandin F2α (PGF2α) or Gonadotropin Releasing Hormone (GnRH). Bov. pract. 2002, 36 (1), 35-39. https://doi.org/10.21423/bovine-vol36no1p35-39.