1.
Vicente WRR, Toniollo GH, Oliveira CA de, Malheiros EB, Pugliese AC. Evaluation of seric levels of progesterone in sows during gestation. Braz. J. Vet. Res. Anim. Sci. 1992;29(1):139-145. doi:10.11606/issn.1678-4456.bjvras.1992.51963