Domènech, Anna, Sara Pich, Anna Arís, Carmen Plasencia, Alex Bach, and Alicia Serrano. 2011. “Heat Identification by 17β-Estradiol and Progesterone Quantification in Individual Raw Milk Samples by Enzyme Immunoassay”. Electronic Journal of Biotechnology 14 (4). Valparaíso, Chile. https://preprints.pucv.cl/index.php/ejbiotechnology/article/view/v14n4-6.