W. L. Vianna, M. E. Pinese, A. de C. Rosseto, C. A. de Oliveira, and A. de S. Moretti, “Induction of puberty and following estrus synchronization in prepubertal gilts using exogenous gonadotropins”, Braz. J. Vet. Res. Anim. Sci., vol. 43, no. supl., pp. 28–32, Dec. 2006, doi: 10.11606/issn.1678-4456.bjvras.2006.26532.