Chacón Pérez, G., S. García-Belenguer Laita, J.C. Illera del Portal, and J. Palacio Liesa. 2004. “Validation of an EIA [enzyme Immunoassay] Technique for the Determination of Salivary Cortisol in Cattle”. Spanish Journal of Agricultural Research 2 (1), 45-51. https://doi.org/10.5424/sjar/2004021-59.