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4. Doeblin, Ernest O., Measurement Systems: Application and Design, McGraw-Hill Book Company, New York, 1983.
5. Ellyin, F., Lind, N. C., and Sherbourne, A. N., “Elastic Stress Field in a Plate with a Skew Hole”, J. of Eng. Mechanics Division, ASCE 92 (EM1), 1966, pp. 1–10.