1. Mertz J (2009) Introduction to optical microscopy. Roberts and Company publishers, Colorado
2. Pawley JB (ed) (1995) Handbook of biological confocal microscopy. Plenum Press, New York
3. Slayter EM, Slayter HS (1992) Light and electron microscopy. Cambridge University Perss, Cambridge
4. Born M, Wolf E (1999) Principles of optics, 7th edn. Cambridge University Press, Cambridge
5. Minsky M (1961) US Patent 3,013,467