León-Duharte , L. ., M. de los Ángeles . Arada-Pérez, L. . Vila-Torres, A. . Fernández-Estrada, and C. . Chibinda. “Evaluation of the Water Quality of the Spring ‘El Paraíso’ in Santiago De Cuba”. Revista Cubana De Química, vol. 34, no. 2, June 2022, pp. 303-14, https://cubanaquimica.uo.edu.cu/index.php/cq/article/view/5247.