1. Zygo Corporation, Zygo Interferometer System With Mark Ii Mainframe And Accessories, Laurel Brook Road, Middlefield, CT06455 (USA), 1978.
2. The Zygo interferometer system;Forman;SPIE, Interferom.,1979
3. Fabrication and testing of off-axis parabolic mirrors;Magner;Opt. Laser Technol.,1987
4. Differential technique for accurately measuring the radius of curvature of long radius concave optical surfaces;Gerchaman;Opt. Eng.,1980
5. Using diffractive optical element and Zygo interferometer to test large-aperture convex surface;Liu;Opt. Laser Technol.,2005