Accommodative Convergence - An Adaptive Nonlinear Control System. - Jerald S. Brodkey; Lawrence Stark (IEEE Trans. Syst. Sci. Cybern., 1967)

A Minimum Variance, Time Optimal, Control System Model of Human Lens Accommodation. - William D. O'Neill; C. K. Sanathanan; Jerald S. Brodkey (IEEE Trans. Syst. Sci. Cybern., 1969)