Roca , Santiago, and Luis Simabuko. “Value and Quality Creation: Natural Resources, Industrialization and Standards of Living in Peru 1950 to 1997”. Journal of Economics, Finance and Administrative Science 5, no. 9-10 (December 30, 1999): 69–123. Accessed May 22, 2024. https://revistas.esan.edu.pe/index.php/jefas/article/view/460.