Adiguzel A. Dosiyev, Hediye Sarikaya, “A Highly Accurate Difference Method for Approximating the Solution and Its First Derivatives of the Dirichlet Problem for Laplace's Equation on a Rectangle”, Mediterr. J. Math., 18:6 (2021)
Dosiyev A.A. Sarikaya H., “14-Point Difference Operator For the Approximation of the First Derivatives of a Solution of Laplace'S Equation in a Rectangular Parallelepiped”, Filomat, 32:3 (2018), 791–800
Dosiyev A.A. Abdussalam A., “On the High Order Convergence of the Difference Solution of Laplace'S Equation in a Rectangular Parallelepiped”, Filomat, 32:3 (2018), 893–901
Gracia J.L., O'Riordan E., “Scaled Discrete Derivatives of Singularly Perturbed Elliptic Problems”, Numer. Meth. Part Differ. Equ., 31:1 (2015), 225–252
Adiguzel A Dosiyev, Hamid MM Sadeghi, “A fourth order accurate approximation of the first and pure second derivatives of the Laplace equation on a rectangle”, Adv Differ Equ, 2015:1 (2015)
Dosiyev A.A., “the Block-Grid Method For the Approximation of the Pure Second Order Derivatives For the Solution of Laplace'S Equation on a Staircase Polygon”, J. Comput. Appl. Math., 259:A (2014), 14–23