1. H. S. Carslaw, and J. C. Jaeger,Conduction of Heat in Solids(Oxford University Press, New York, 1947), pp. 71–74.
2. See, e.g., T. R. Goodman,1957 Heat Transfer and Fuid Mechanics Institute Preprints(Standford University Press, Stanford, California, 1957), pp. 383–400.