Valverde-Abarca, A., M. Madrigal-Valverde, M. Camacho-Calvo, A. Zambrana-Jiménez, and L. López. “Effect of Breed Composition on Sperm Quality of Boar”. Agronomía Mesoamericana, vol. 29, no. 3, Sept. 2018, pp. 485-06, doi:10.15517/ma.v29i3.32445.