Valderrama Valdés, N. ., G. . Azócar García, and F. . Juárez Rubio. “Determining Factors and Trends of Agricultural Productivity in a Region of Central Chile”. RAN - Revista Academia & Negocios, vol. 5, no. 1, Nov. 2020, pp. 1-14, https://revistas.udec.cl/index.php/ran/article/view/2593.