1. “Treatise on the Mathematical Theory of Elasticity,” by A. E. H. Love, Cambridge University Press, fourth edition, 1927, pp. 193–198.
2. Reference 2, pp. 242 and 244.
3. “Hydrodynamics,” by H. Lamb, sixth edition, Cambridge University Press, 1932, p. 137.
4. “Treatise on the Theory of Bessel Functions,” by G. N. Watson, Cambridge University Press, 1922, p. 405.
5. “Kerbspannungslehre,” by H. Neuber, Julius Springer, Berlin, Germany, 1937, pp. 85–90.