New Test of the Equivalence Principle from Lunar Laser Ranging
J. G. Williams, R. H. Dicke, P. L. Bender, C. O. Alley, W. E. Carter, D. G. Currie, D. H. Eckhardt, J. E. Faller, W. M. Kaula, J. D. Mulholland, H. H. Plotkin, S. K. Poultney, P. J. Shelus, E. C. Silverberg, W. S. Sinclair, M. A. Slade, and D. T. Wilkinson
Phys. Rev. Lett. 36, 551 (1976) - Published 15 March, 1976
Verification of the Principle of Equivalence for Massive Bodies
Irwin I. Shapiro, Charles C. Counselman, III, and Robert W. King
Phys. Rev. Lett. 36, 555 (1976) - Published 15 March, 1976