Akpanibah, E. E., Benneth, P., & Esabai, A. M. (2025). A MATHEMATICAL APPROACH TO INVESTMENT WITH CHARGE ON BALANCE AND VOLUNTARY CONTRIBUTIONS UNDER WEIBULL MORTALITY FORCE FUNCTION. BAREKENG: Jurnal Ilmu Matematika Dan Terapan, 19(1), 427-440. https://doi.org/10.30598/barekengvol19iss1pp427-440