New 25-point stencils with optimal accuracy for 2-D heat transfer problems. Comparison with the quadratic isogeometric elements. - Alexander Idesman; Bikash Dey (J. Comput. Phys., 2020)

The numerical solution of the 3D Helmholtz equation with optimal accuracy on irregular domains and unfitted Cartesian meshes. - Alexander Idesman; Bikash Dey (Eng. Comput., 2022)

The 10-th order of accuracy of 'quadratic' elements for elastic heterogeneous materials with smooth interfaces and unfitted Cartesian meshes. - Alexander Idesman; Bikash Dey; M. Mobin (Eng. Comput., 2022)