1. LINPACK User's Guide;Dongarra,1979
2. On Fourier-Toeplitz methods for separable elliptic problems;Fischer;Mathematics of Computation,1974
3. On the use of fast methods for separable finite difference equations for the solution of general elliptic problems;Widlund,1972
4. Numerical Solution of Partial Differential Equations: Finite Difference Methods;Smith,1985
5. Digital Signal Processing;Roberts,1987