Hassan Mohamm, A., & Rahman Hussein, S. (2017). Numerical Method for Evaluation of Double Integrals with continuous Integrands by using Trapezoidal rule and Romberg acceleration when the number of subintervals at the two dimensions are unequal. Journal of Al-Qadisiyah for Computer Science and Mathematics, 7(2), 17–28. Retrieved from https://jqcsm.qu.edu.iq/index.php/journalcm/article/view/76