WASET
    H. D. Ibrahim and  H. C. Chinwenyi and  T. Danjuma,  The Non-Uniqueness of Partial Differential Equations Options Price Valuation Formula for Heston Stochastic Volatility Model.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    November 2020, vol. 168(12). 155 - 158
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/10011628.