1. Bakkelid, S.: a) Preliminary Results of some Tellurometer Problems. Geogr. Survey of Norway, Geod. Publ. Nr. 13; b) Tellurometer Measurements in Norway. Geod. Publ. Nr. 12.
2. Edge, U.C.A.: Report of IAG Special Study group Nr. 19 on „Electronic Distance Measurement” using ground instruments, Helsinki 1960.
3. Gardiner-Hill: Refinements of Precise Distance Measurements by Tellurometer. Paper presented at Commonwealth Survey offices Conf., London 1963.
4. Gerke, K.: a) Die Tellurometer-Messungen d. Inst. f. Angew. Geodäsie im Jahre 1958. DGK, Reihe B, H. 61, 1962; b) Frequency-Checks at the Tellurometer. Inst. f. Angew. Geodäsie, XII. Gen. Vers. IUGG, 1960 Helsinki; c) Die Tellurometermessungen des Inst. f. Angew. Geod. im Jahre 1958. DGK Reihe B, H. 61, 1962; d) Tellurometermessungen über dem Wattenmeer 1960. DGK Reihe B, H.74.
5. Hart, C.A.: Some aspects of the influence on Geodesy of accurate range measurements by radio-methods with special reference of Radar. Bull, geodesique, 1948, S. 307–352.