1. How I discovered phase contrast;F Zernike;Science,1955
2. Yun W, Feser M, Hornberger B. System and method for quantitative reconstruction of Zernike phase-contrast images; 2010. Available from: http://www.google.com/patents/US7787588.
3. Cui X, Yang C, Tearney GJ. Quantitative differential interference contrast (DIC) microscopy and photography based on wavefront sensors; 2011. Available from: http://www.google.com/patents/US8039776.
4. Diffraction phase microscopy for quantifying cell structure and dynamics;G Popescu;Optics Letters,2006
5. Spatial light interference microscopy (SLIM);Z Wang;Optics Express,2011