Singh, Khushpreet, et al. “Effect of Fetal Calf Serum (FCS) Versus Polyvinylpyrrolidine (PVP) on in Vitro Maturation of Oocytes Retrieved by Ovum Pick-up (OPU) in Sahiwal Cows ”. The Indian Journal of Animal Reproduction, vol. 46, no. 3, Sept. 2025, pp. 30-35, https://doi.org/10.48165/ijar.2025.46.03.4.