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2. Treatise on Physiological Optics;Helmholtz,1866
3. Elastic properties of the lens;Kikkawa;Exptl. Eye Res.,1963
4. A thin shell deformation analysis of the human lens;O'Neill;Vision Res.,1968
5. Nonlinear servoanalysis of human lens accommodation;Stark;IEEE Trans. SSC-1,1965