1. Non-Singular Expressions for the Gravity Gradients in the Local North-Oriented and Orbital Reference Frames

   • M. S. Petrovskaya
   • A. N. Vershkov

   Original Article 06 May 2006 Pages: 117 - 127

2. A Critical Analysis of a Recent Test of the Lense–Thirring Effect with the LAGEOS Satellites

   • Lorenzo Iorio

   Original Article 07 June 2006 Pages: 128 - 136

3. A VLBI Delay Model for Radio Sources at a Finite Distance

   • M. Sekido
   • T. Fukushima

   Original Article 28 April 2006 Pages: 137 - 149

4. Uncertainty in GPS Networks due to Remaining Systematic Errors: The Interval Approach

   • S. Schön
   • H. Kutterer

   Original Article 04 April 2006 Pages: 150 - 162

5. IAG Newsletter

   • Gyula Tóth

   IAG Newsletter 07 June 2006 Pages: 163 - 170