Lesmana, D. C., R. T. A. Ramadhan, S. Nurjanah, and V. S. Dharmawan. “PRICING EMPLOYEE STOCK OPTION USING TRINOMIAL TREE METHOD”. BAREKENG: Jurnal Ilmu Matematika Dan Terapan, Vol. 19, no. 2, Apr. 2025, pp. 709-20, doi:10.30598/barekengvol19iss2pp709-720.