Pérez Clariget, R., and M. S. Orcasberro. “Calving at the Beginning or End of Winter in Nulliparous Ewes: Effects on Maternal Behavior and That of Their Progeny”. Archivos Latinoamericanos De Producción Animal, Vol. 28, no. 1-2, Oct. 2020, pp. 29-38, https://ojs.alpa.uy/index.php/ojs_files/article/view/2777.