1. Approximate solution of normal equations by eigenvalue decomposition

   • M. Schmidt

   Article Pages: 109 - 117

2. Unbiased vs biased estimation of GPS phase ambiguities from dual-frequency code and phase observables

   • L. E. Sjöberg

   Article Pages: 118 - 124

3. The terrestrial and lunar reference frame in lunar laser ranging

   • C. Huang
   • W. Jin
   • H. Xu

   Article Pages: 125 - 129

4. A harmonic spline model for local estimation of planetary gravity fields from line-of-sight acceleration data

   • G. Moreaux
   • J. P. Barriot
   • L. Amodei

   Article Pages: 130 - 137

5. Spectral accuracy of Jgm3 from satellite crossover altimetry

   • J. Klokočník
   • C. A. Wagner
   • J. Kostelecký

   Article Pages: 138 - 146

6. Improving the orbit estimates of GPS satellites

   • T. A. Springer
   • G. Beutler
   • M. Rothacher

   Article Pages: 147 - 157

7. GPS sensitivity analysis applied to non-permanent deformation control networks

   • B. Betti
   • L. Biagi
   • F. Riguzzi

   Article Pages: 158 - 167

8. IAG Newsletter

   • O. B. Andersen

   Article Pages: 168 - 170