1. G. D. Walberg, "A survey of aeroassisted orbital transfer," J. Spacecraft, 22, 3–18, 1985.
2. M. A. De Virgilio, G. R. Wells, and E. E. Schiring, "Optimal guidance for aerodynamically controlled reentry vehicles," AIAA Journal, 12, 1331–1335, Oct. 1974.
3. D. D. Sworder, "A feedback regulator for following a reference trajectory," IEEE Trans. Aut. Control, 22, 957–959, 1977.
4. H. J. Pesch, "Real-time computation of feedback controls for constrained optimal control problems, part I: neighboring extremals," Optimal Control: Applications and Methods, 10, 129–145, 1989.
5. D. G. Hull, and J.-Y. Lee, "Perturbation guidance for aerocruise with bounded control," AIAA Guidance, Navigation, and Control Conference, Boston, MA, Aug. 14–