1. H. S. Carslaw andJ. C. Jaeger,Conduction of Heat in Solids (Clarendon Press, Oxford 1947), p. 9.
2. A. E. H. Love,The Mathematical Theory of Elasticity (Dover Publication, New York 1944), p. 142.
3. N. W. McLachlan,Bessel Function for Engineers, 2nd ed. (Clarendon Press, Oxford 1955), pp. 202–204.
4. S. Timoshenko andJ. N. Goodier,Theory of Elasticity, 2nd ed. (McGraw-Hill, 1951), p. 421.