[1] Hung Y Y, Liang C Y.Image-shearing camera for direct measurement of surface strains.Appl Opt,1979,18(7):1046～1051

[2] Hung Y Y. Shearography: A new optical method for strain measurement and nondestructive testing.Opt Eng, 1982,21(3):391～395

[3] Hung Y Y. Recent development in practical optical nondestructive testing.SPIE,1554B,1991, 29～45

[6] Creath K.Phase-shifting speckle-pattern interferormetry.Appl Opt,1985,24(18):3053～3058