1. C. C. Deve ,Optical Workshop Principles, 2nd ed., pp. 263–280, Hilger and Watts, London (1954).
2. F. Twyman ,Prism and Lens Making, 2nd ed., pp. 21–38 402–408, Hilger and Watts, London (1957).
3. A. S. De Vany ,Master Optical Techniques, John Wiley and Sons, New York (1981).
4. D. F. Horne ,Optical Production Technology, pp. 343–352, Adam Hilger, London (1972).
5. B. K. Johnson ,Optics and Optical Instruments, pp. 159–200, Dover Publications, New York (1960).