1. I. On the propagation of tremors over the surface of an elastic solid
2. Mathematical and Physical Papers, vol. 2, Cambridge, England 1883, Cambridge University Press, p. 297.
3. The Propagation of Wave Motion in an Isotropic Elastic Solid Medium, Proc. London Math. Soc. ser. 2, (1904), pp. 291–344.
4. Paper No. P-8;Lang,1956
5. Paper No. P-1;Lang,1958