1. Solution of the Heimholtz equation by the method of fictitious domains;Kuznetsov,1972
2. On the construction and methods of solving systems of variational-difference equations;Matsokin,1975
3. Iterative methods for solving variational-difference schemes for two-dimensional second-order elliptic equations;Astrakhantsev,1972
4. Variational-difference methods for solving elliptic equations;Oganesyan,1974
5. On the use of extrapolation for the construction of v.d.s. on a regular mesh;Rukhovets,1976