R. Brown, and P. Ward. Proc. of the IEEE Position Location and Navigation Symposium (PLANS).
'The 1990's - A Decade of Excellence in the Navigation Sciences'., (March 1990)
R. Abbot, R. King, Y. Bock, and C. Counselman. The Earth's Rotation and Reference Frames for Geodesy and Geodynamics, volume 128 of IAU Symposium, page 209-+. (1988)