[1]
Madureira, E.H. et al. 1990. Progesterone concentrations measured by radioimmunoassay in blood plasma and in fat-free milk of Gir breed cows iBos indicus). Determinations during oestrus cycle. Early pregnancy diagnosis. Brazilian Journal of Veterinary Research and Animal Science. 27, 2 (Dec. 1990), 247–253. DOI:https://doi.org/10.11606/issn.0000-0000.272247-253.