R. G. Zhindon-Almeida, R. A. Sánchez-Ancajima, and W. J. Castañeda-Guzmán, “Application of Multivariate Statistics for the Development of a Water Quality Model of Estuary El Macho, Machala-Ecuador”, Revista de la Universidad del Zulia, vol. 15, no. 42, pp. 428-446, Dec. 2023.