1. H. von Helmholz, Popular Scientific Lectures, New York, Dover, 1962.
2. W.T. Welford, Aberrations of Optical Systems, Adam Hilger, Bristol, 1986.
3. Beam shaping with optical array generators;Streibl;J. Mod. Opt.,1989
4. Lenticular Hartmann-screen;Platt;Opt. Sci. Center Newsl.,1971
5. Aberrations and retinal image quality of the normal human eye;Liang;JOSA A,1997