F. P. Bortolozzo, I. Wentz, G. Brandt, and A. L. Guidoni, “Reproductive performance of sows submitted to uterine infusions in the beginning of oestrus”, PAB, vol. 35, no. 3, pp. 623–629, Mar. 2000, doi: 10.1590/S1678-3921.pab2000.v35.5812.