1. White-Light Interferometric Thickness Gauge
2. N. Tanaka, M. Takeda, K. Matsumoto, Interferometrically measuring the physical properties of test object, United States Patent 4,072,422 (filed October 20 1976, issued February 7, 1978).
3. Three-dimensional sensing of rough surfaces by coherence radar
4. See, for example K. Nishi, H. Haneishi, Computer-based white-light fringe analysis for film thickness measurement,” Thesis, Univ. Electro-Communications, 1984, 1985.