References
1. M. Born and E. Wolf, Principles of Optics, 7th ed., Cambridge, 1999.
2. ISO 24157:2008: Ophthalmic optics and instruments — Reporting aberrations of the human eye. International Organization for Standardization, Geneva, Switzerland.
3. ANSI Z80.28-2010: American National Standard for Ophthalmics — Methods of Reporting Optical Aberrations of Eyes. American National Standards Institute, Alexandria VA.