Outline of the contents: Sr Z\]
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1. Basic Interferometers for Optical Testing Ve#VGlI
2. Phase-Shifting Interferometry {Tb(4or?=b
3. Specialized Optical Tests (NK$2A/p
4. Long Wavelength Interferometry ]CsF} wr'z
5. Testing of Aspheric Surfaces E,&BP$B
6. Measurement of Surface Microstructure 0(\ybppx
7. Absolute Measurements v*`$is+
8. Concluding Remarks