1. H. Lamb, On the propagation of tremors over the surface of an elastic solid. Phil. Trans. Roy.Soc.London, Ser.A, 203: 1–42 (1904).
2. V.I. Smirnov and S. L. Sobolev, A new method for the solution of the planar problem of elastic vibrations, Tr. Seismol. Inst., No. 20 (1932).
3. V.I. Smirnov and S. L. Sobolev, The application of a new method of studying elastic vibrations, Tr. Seismol. Inst., No. 29 (1933).
4. G.I. Petrashen’, The Lamb problem in the case of an elastic semi-infinite medium, Dokl. Akad. Nauk SSSR, 64 (5): 649–652 (1949).
5. G.I. Petrashen’, G.I. Marchuk, and K.I. Ogurtsov, The Lamb problem in the case of a semi-infinite medium, Uch. Zap. Leningr.Gos.Univ., 135: 71–118 (1950).