Tiovanny, Angel, Maulida Yanti, and Citra Dewi Hasibuan. “Stochastic Interest Rate Models in Pension Fund Valuation: A Comparative Study of Vasicek and Cox-Ingersoll-Ross under the Aggregate Cost Method”. Journal of Research in Mathematics Trends and Technology 8, no. 1 (May 20, 2026). Accessed June 15, 2026. https://talenta.usu.ac.id/jormtt/article/view/22753.