1. R.B. LANGLEY, W.H. CANNON, W.T. PETRACHENKO and J. KOUBA: LBI and Satellite Doppler: Baseline Comparisons,Proceedings of the 2nd International Geodetic Symposium on Satellite Doppler Positioning, The University of Texas, at Austin, Texas, 1979.
2. Larry D. HOTHEM: Determination of Accuracy, Orientation and Scale of Satellite Doppler Point-Positioning Coordinates, Ibid.
3. E.M. GAPOSCHKIN: Gravity-field determination from laser observations.Phil. Trans R. Soc. London A284, 515–527, 1977.
4. Joseph A. GREENWOOD: Sample size required for estimating the standard deviation as a percent of its true value,Journal of the American Statistical Association, 45 (250), 257–264, June 1950.
5. Kenneth L. BRACE: Preliminary ocean-area geoid from GEOS-3 satellite radar altimetry, Defense Mapping Agency Aerospace Center preprint, St. Louis, November, 1977.