Viana, C. H. C., P. H. Candini, R. D. Gama, A. Carbone, and R. C. Barnabe. “Effect of Insemination-to-Induced Ovulation Interval on Fertilization Rate, Embryo Viability and Number of Accessory Sperms in Sows”. Brazilian Journal of Veterinary Research and Animal Science, vol. 43, no. 1, Feb. 2006, pp. 132-8, doi:10.11606/issn.1678-4456.bjvras.2006.26258.