1. Steel structures;Wei,2000
2. The Study of Internal Stresses in Cast Iron and Steel, London;Kalakoutsky,1889
3. Aachen. Determination of initial stresses by measuring the deformations around drilled holes;Josef;Iron and steel,1934
4. Gisen. F, Gloker. R, Osswald. E, et al. X-ray stress analysis 1936; 6(3): 140-153.
5. Residual stresses in heavy welded shapes;Alpsten;Weld. J.,1970