Gan , XiaotingYin , Junfeng and Li , Rui. (2023). On the Convergence of a Crank-Nicolson Fitted Finite Volume Method for Pricing European Options Under Regime-Switching Kou’s Jump-Diffusion Models. Advances in Applied Mathematics and Mechanics. 15 (5). 1290-1314. doi:10.4208/aamm.OA-2021-0016