Garc?a, J. R., R. Garc?a L?pez, M. Cuesta, J. M. Figueredo, R. Qui?ones, R. Faure, R. Pedroso, and A. Mollineda. “Blood Copper Levels and Their Influence on Reproductive Indicators of Cows in Tropical Conditions”. Cuban Journal of Agricultural Science, vol. 44, no. 3, Sept. 2010, https://cjascience.com/index.php/CJAS/article/view/215.