1. “Survey of Numerical Methods for Parabolic Differential Equations,”;Douglas,1961
2. Analysis of Numerical Methods;Isaacson,1966
3. “Accurate Difference Methods for Linear Ordinary Differential Systems Subject to Linear Constraints,”;Keller;SIAM Jour. on Num. Anal.,1969
4. “Numerical Solution of Ordinary Differential Equations,”;Kreiss,1969
5. Varan, J. M., “Stability of the Mixed Initial Boundary Value Problem for Parabolic Systems,” to be published.