1. Measurement Group Tech Note TN 503-3, Residual Stress Measurement, USA, 1988
2. Weng, C.C., Lo, S.C.: Mater. Sci. Technol. 8, 213 (1992)
3. Standard E 837-92, ASTM, Philadelphia, USA, 1992
4. Bathgate, R.G.: J. Br. Soc. Strain Meas. 4(2), 20 (1968)
5. Beaney, I.M.: Strain 99, 106 (1976)