1. Salvador!, M G and Baron, M L , Numerical Methods in Engineering (Prentice Hall, Inc , Englewood Cliffs, N J ,1961), p227
2. Forsythe, G E and Wasow, W R , Finite-Difference Methods for Partial Differential Equations (John Wiley and Sons, Inc , New York, 1960), pp283-288
3. Stewartson's compressibility correlation in three dimensions
4. Correlated incompressible and compressible boundary layers