The Lunar Laser Ranging Experiment: Accurate ranges have given a large improvement in the lunar orbit and new selenophysical information.Peter Bender, J. G. Williams, Donald H. Eckhardt et al.|PubMed|1973Cited by 240
New Test of the Equivalence Principle from Lunar Laser RangingJ. G. Williams, D. T. Wilkinson, S. K. Poultney et al.|Physical Review Letters|1976Cited by 173