Tessema, M.C., Tuke, A., Mohamad, A., Rabayo, K., Yadeta, K.T. and Yadeta, K.T. 2022. How Do Help “Multigrid Principles based on Numerical Solutions of Partial Differential Equations” for Smoothing Process (Concepts)?. Journal La Multiapp. 3, 3 (Jun. 2022), 84-92. DOI:https://doi.org/10.37899/journallamultiapp.v3i3.655.