ROSERO ERAZO, C. R.; YAULEMA GARCES, F. M.; YAULEMA CASTAƑEDA, J. L. Stochastic mathematical model to diagnose water and sediment quality in areas influenced by oil activity in the province of Orellana. . ConcienciaDigital, v. 4, n. 3, p. 177-195, 20 Jul. 2021.