Herrera, M., C. W. Guerra, and Y. Medina. “Integral Evaluation of Indicators in Models of Parametric and Non-Parametric Analysis of Variance. Use of the Categorical Principal Component”. Cuban Journal of Agricultural Science, vol. 50, no. 2, Sept. 2016, https://www.cjascience.com/index.php/CJAS/article/view/608.