“Effectiveness of Classic Versions of Options Pricing Models in Recent Waves of Financial Upheavals”, aamjaf, vol. 9, no. 2, pp. 127–155, Dec. 2013, Accessed: Nov. 22, 2024. [Online]. Available: https://ejournal.usm.my/aamjaf/article/view/aamjaf_vol9-no2-2013_6