1. Butters, J. N. and Leendertz, J. A., 1972. “Application of Video Techniques and Speckle Pattern Interferometry to Engineering Measurement.”Proc. Symp. of Eng. Appl. of Holography, Society of Photo-optical Instrum. Eng. pp. 361–375
2. Denby, D. and Leendertz, J. A., 1974, “Plane Surface Strain Examination by Speckle-Pattern Interferometry Using Electronic Processing,”J. Strain Analysis, Vol. 9, No. 1, pp. 17–25.
3. Develis, J. B., 1967,Theory and Applications of Holography, Addison-Wesley, Tokyo, p. 155.
4. Ennos, A. E., 1968, “Measurement of In-plane Surface Strain by Hologram Interferometry,”J. Phys. E Sci. Instrum., Vol. 1, Ser. 2, pp. 731–734.
5. Erf, R. K., 1974,Holographic Nondestructive Testing, Academic Press, p. 87.