1. ISO 18221:2016, Microscopes - Microscopes with digital imaging displays - Information provided to the user regarding imaging performance.
2. Levinson, H.J., 2005. Principles of Lithography Second Edition, SPIE PRESS Bellingham Washington USA.
3. Mack, C.A., 1988. Understanding focus effects in submicron optical lithography, SPIE Vol. 922 Optical /Laser Microlithography.
4. Martin, L.C., 1966. ‘Chapter Ⅳ Incoherent Illumination’, The Theory of The Microscope, London BLACKIE Glasgow.
5. Murphy, D.B., Davidson, M.W., 2013. Fundamental of light microscope and electronic imaging, Wiley-Blackwell.