1. “Ueber Fortpflanzunggeschwindigkeiten kleiner Schwingungen in einem unbegrenzten isotropen Kreiszylinder”;POCHAMMER;J. f. reine u. angew. Math. Crelle,1876
2. “The equations of an isotropic elastic solid in polar and cylindrical coordinates, their solution and application”;CHREE;Trans. Cambridge Phil. Soc.,1889
3. “Stress wave propagation in rods and beams”;ABRAMSON,1958
4. “Longitudinal vibrations of a hollow cylinder”;GHOSH;Bull. Calcutta Math. Soc.,1923
5. “The velocity of longitudinal waves in cylindrical bars”;BANCROFT;Phys. Rev.,1941