1. I.I. MUELLER: “Global Satellite Triangulation and Trilateration”, Bulletin Géodésique, No. 87, pp. 53–71, 1968.
2. R.P. PEAT:A Method for Adjusting Simultaneous Range Observations on an Orbiting Geodetic Electromagnetic Satellite. The Ohio State University, MSc thesis, 1967.
3. NASA/Goddard Space Flight Center:Geodetic Satellite Observation Station Directory. Compiled by Geonautics, Inc., July 1968.
4. L.G. SIMMONS: “How Accurate is First Order Triangulation?”. The Journal, Coast & Geodetic Survey, April 1950, No. 3, pp. 53–56.
5. C.R. SCHWARZ:The Use of Short Arc Orbital Constraints in the Adjustment of Geodetic Satellite Data. The Ohio State University Department of Geodetic Science Report No. 118, December 1968.