1. C. M. Akridge and S. H. Harlin, “Parametric performance analysis of lunar missions, part II: lunar descent,” Tech. Rep. MTP-P&VE-F-63-8, NASA, George C. Marshall Space Flight Center, Huntsvillie, AL, February, 1965.
2. Project Apollo Working Paper;F. V. Bennett,1963
3. J. S. Meditch, “On the problem of optimal thrust programming for a lunar soft landing,” IEEE Trans. on Automatic Control, vol. 9, no. 4, pp. 477–484, October 1964.
4. C. R. Cavoti, “Minimum-fuel, two-impulse, soft lunar landing orbits,” Tech. Rep. NASA CR-65554, Space Sciences Laboratory, General Electric Company, September 1996.
5. R. V. Ramanan and M. Lal, “Analysis of optimal strategies for soft landing on the Moon from lunar parking orbits,” Journal of Earth System Science, vol. 114, no. 6, pp. 807–813, 2005.