1. 1) Cannon, D. F., Sinclair, J., Sharpe, K. A.: "Improving the Fatigue Performance of Bolt Holes in Railway Rails by Cold Expansion," Proceedings of Fatigue, Corrosion Cracking, Fracture Mechanics & Failure Analysis, International Conference & Exposition, December 1985.
2. 2) Satoh, Y., Sato, Y.: "Life of Rail (in Japanese)," Railway Technical Research Report, No.476, June 1965.