Statistical evaluation of primary relevellings M. SchädlichJ. Steinberg OriginalPaper 01 June 1981 Pages: 94 - 98
Investigations on the accuracy concerning the derivation of absolute gravimetric height anomalies and deflections of the vertical based on the theory of Molodensky Johannes Ihde OriginalPaper 01 June 1981 Pages: 99 - 110
Representation of orbital element variations and force function with respect to various reference systems Christoph Reigber OriginalPaper 01 June 1981 Pages: 111 - 131
Sequential array algebra using direct solution of eigenvectors Urho A. Rauhala OriginalPaper 01 June 1981 Pages: 159 - 166
Reply to M. Ekman’s on the Definition of Gravity, Remarks on “A Remark on M. Heikkinen’s Paper: “On the Honkasalo term in tidal corrections to gravimetric observations” Letter 01 June 1981 Pages: 169 - 169
