Muniz, Adriana, et al. “Combined Effects Feeding Restriction and Flushing on Fertility of Gilts Inseminated at Different Estrous Cycles”. Brazilian Journal of Veterinary Research and Animal Science, vol. 50, no. 6, Dec. 2013, pp. 462-7, https://doi.org/10.11606/issn.1678-4456.v50i6p462-467.