1. Ananda, M. P., A. J. Ferrari and W. L. Sjogren (1977): An Improved Lunar Moment of Inertia Determination: a Proposed Strategy, Moon, 17, 101–120.
2. Araki, H., K. Heki, M. Yoshikawa, H. Hanada, M. Ooe, N. Kawano (1996): Estimation Accuracy of Lunar Gravity Coefficients through the RISE Project, Abstract of Fall Meeting of the Japanese Society for Planetary Science, 1996 (in Japanese).
3. Bills, B. G. (1995): Discrepant Estimates of Moments of Inertia of the Moon, J. Geophys. Res., E12, 26297–26303.
4. Calame, O. (1977): Free Librations of the Moon from Lunar Laser Ranging, Scientific Applications of Lunar Laser Ranging (ed. J. D. Mulholland), Dordrecht: D. Reidel, 53–63.
5. Counselman III, C. C., H. F. Hinteregger, R. W. King and I. I. Shapiro (1973): Precision Selenodesy via Differential Interferometry, Science, 181, 772–774.