“Analysis of the Determination of Contributions in the Peruvian Private Pension System: An Application of Annuities and Perpetuities”. Contabilidad y Negocios 7, no. 14 (December 26, 2012): 49–56. Accessed September 18, 2026. https://revistas.pucp.edu.pe/index.php/contabilidadyNegocios/article/view/3878.