1. Delikaraoglou D. Beck N. McArthur D. and Lochhead K. (1985). “On the establishment of 3‐D geodetic control by interferometry with the TI‐4100 GPS receiver.” First Internatl. Symp. on Precise Positioning with the Global Positioning System . Washington D.C. Apr. 15–19 645–655.
2. The precise computation of geoid undulation differences with comparison to results obtained from the Global Positioning System
3. Forsberg R. (1984). “Gravity field terrain effect computations by FFT.” 1984 Fall Meeting of the AGU . San Francisco Calif. Dec.
4. Groten E. (1985). “Model refinements in the solutions of the boundary value problem of physical geodesy.” Proc. of the Internatl. Summer School on Local Gravity Field Approximation . Beijing China Aug. 21–Sept. 4 1984. UCSE Report No. 60003. K. P. Schwarz Ed. Calgary Alberta Canada.