Zemla A

Publications in Math-Net.Ru

1. Lattice approximations of the Helmholtz equation in a singularly perturbed region
   
   Zh. Vychisl. Mat. Mat. Fiz., 28:8 (1988),  1177–1189
2. Fundamental solution of the difference approximation of the Helmholtz operator
   
   Zh. Vychisl. Mat. Mat. Fiz., 25:9 (1985),  1416–1421