Mejía-Peñafiel, E. F., J. E. Aguilar-Reyes, P. F. Bolaños-Logroño, and J. R. López-Ortega. “Methods of Imputation by Regression, Imputation by Mode, Multiple Imputation and Decision Trees for Categorical Variables in Comparative Perspective”. Journal of the University of Zulia , Vol. 15, no. 43, Apr. 2024, pp. 541-55, doi:10.46925//rdluz.43.29.