Noor Afifah Wan Ahmad, W., S. Firdaus Sufahani, M. Abd Hakim Mohamad, and N. ZainalAbidin. “OPTIMIZING ROYALTY PAYMENTS FOR MAXIMUM ECONOMIC BENEFIT: A CASE STUDY UTILIZING MODIFIED SHOOTING AND DISCRETIZATION METHODS”. Advances in Differential Equations and Control Processes, Vol. 31, no. 4, Oct. 2024, pp. 563-81, doi:10.17654/0974324324029.