1. Aardoom L. (1978), “Earth Rotation and Polar Motion from Laser Ranging to the Moon and Artificial Satellites”, in: 9th Research Conference on Application of Geodesy to Geodynamics, Ohio State University, I. I. Mueller (ed.), Report of the Department of Geodetic Science, No. 280.
2. “Determination of polar motion from satellite observations”;Anderle;Geophys. Survey,1973
3. “Comparison of Doppler and optical pole position over twelve years”;Anderle,1976
4. “Doppler satellite observations of polar motion”;Anderle;Bull Geod.,1970
5. Anderle R. J. and Malyevac C. A. (1982), “Status of the NAVSAT Earth's Rotation and Polar Motion Systems”, Raport to the IAU Commission 19 presented at the XVIII IAU General Assembly, Patras, Greece.