1. “Method of Gradients,”;KELLEY,1962
2. H. J. KELLEY, M. FALCO, and D. J. BALL, “Air Vehicle Trajectory Optimization,” SIAM Symposium on Multivariable System Theory, Cambridge, Massachusetts, November 1–3, 1962.
3. “The Organized Search Principle in Systems with Automatic Stabilization,”;GEL'FAND;Doklady Akademii Nauk SSR,1961
4. “Supersonic Transport Climb Path Optimization Including a Constraint on Sonic Boom Intensity,”;FALCO;AIAA J.,1963
5. A. E. BRYSON and W. DENHAM, “A Steepest-Ascent Method for Solving Optimum Programming Problems,” Raytheon Company, Missile and Space Division Report BR-1303, August 1961. Also J. of Appl. Mech., June 1962.