Sixth-Order Stable Implicit Finite Difference Scheme for 2-D Heat Conduction Equation on Uniform Cartesian Grids with Dirichlet Boundaries. Punjab Univ. J. Math. [Internet]. 2025 May 17 [cited 2025 Jun. 29];51(5):27-42. Available from: https://pujm.pu.edu.pk/index.php/pujm/article/view/440