Solving Inverse Cauchy Problems of the Helmholtz Equation Using Conjugate Gradient Based-Method: BICG, BICGSTAB And PCG. Acad. Sci. J. [Internet]. 2023 Oct. 1 [cited 2025 Apr. 3];1(4):13-31. Available from: https://acadscij.uodiyala.edu.iq/index.php/Home/article/view/250