Lomillos, J.M., Blasco Castello, J.L. and Alonso, M.E. 2021. Analysis of the surface hardness of the Lidia Bull horn and the influence of the horn sheath. Revista Científica de la Facultad de Ciencias Veterinarias. 31, 4 (Sep. 2021), 129-136. DOI:https://doi.org/10.52973/rcfcv-luz314.art1.