1. Matrix Iterative Analysis;Varga,1962
2. Finite Difference Methods for Partial Differential Equations;Forsythe,1960
3. An asymmetrical finite difference network;MacNeal;Q. Appl. Math.,1953
4. A finite difference approximation to the diffusion equation in hexagonal geometry;Kellogg;Combustion Engineering, Inc., Report MPC-21,1959
5. A Ritz finite difference approximation to the neutron diffusion equation;Kellogg;Bettis Tech. Rev., WAPD-BT-31,1964