1. (1) Clifton, R. J., A Difference Method for Plane Problems in Dynamic Elasticity, Q. Appl. Math., Vol. 25, No. 1 (1967), p. 97.
2. (2) Tanimura, S., Igaki, H. and Liu, K., Dynamic Behavior of a Circular Cylinder under Impulsive Loads (Stress Concentration Associated with Stress Waves), Trans. Jpn. Soc. Mech. Eng., (in Japanese), Vol. 52, No. 484, A (1986). p. 2680.
3. (3) Liu, K., Tanimura, S. and Igaki, H., The Dynamic Behavior of an Elastic Circular Tube Due to Longitudinal Impact, Trans. Jpn. Soc. Mech. Eng., (in Japanese), Vol. 54, No. 502, A (1988), p. 1284.
4. (4) Liu, K., Tanimura, S. and Igaki, H., Dynamic Behavior of an Elastic/Viscoplastic Circular Cylinder Due to Longitudinal Impact, J. Soc. Mat. Sci., (in Japanese), Vol. 36, No. 411 (1987), p. 1309.
5. (5) Liu, K., Tanimura, S., Kaizu, K. and Daimaruya, M., Dynamic Behavior of Elastic/Viscoplastic Circular Tubes Due to Longitudinal Impact, Trans. Jpn. Soc. Mech. Eng., (in Japanese), Vol. 55, No. 515, A (1989), p. 1572.