P. M. Ojeda Fermoselle, J. Manes, and J. F. Aller, “Seasonal variations of reproductive parameters, semen quality and testosterone levels of Highlander rams”, Rev. investig. vet. Perú, vol. 32, no. 5, p. e19788, Oct. 2021, doi: 10.15381/rivep.v32i5.19788.