Reilly, W.I. 1979 Determination of geometric and gravimetric earth deformation parameters from geodetic observations. [s.l.]: [s.n.]. Report / Geophysics Division 140 29 p.
Abstract: Information on the nature and rates of deformation at or near the earth's surface can be obtained by a variety of geodetic observations. One part of this information describes the changes that take place in the geodetic coordinates of a material point as it moves in relation to a geocentric reference frame; the second part describes changes due to deformation of the earth's crust as neighbouring material points change their relative positions, both with respect to distance and to directions relative to either a fixed geocentric or a local moving reference frame. The deformation of a limited region of the earth's surface can be described in terms of a local reference frame to avoid, as far as possible, problems of reference to a geocentric datum