1. Experimental testing of relativistic effects, variability of the gravitational constant and topography of Mercury surface from radar observations 1964–1989

   • E. V. Pitjeva

   OriginalPaper Pages: 313 - 321

2. About the periodic solutions of a rigid body in a central Newtonian field

   • F. M. El-Sabaa

   OriginalPaper Pages: 323 - 330

3. Synchronization of perturbed non-linear Hamiltonians

   • Bruce R. Miller
   • Vincent T. Coppola

   OriginalPaper Pages: 331 - 350

4. Invariant rotational curves in Sitnikov's Problem

   • J. Martínez Alfaro
   • Cristina Chiralt

   OriginalPaper Pages: 351 - 367

5. Symetries du Probleme desN Corps, Regularisation des Solutions Centrales Singulieres

   • Edelman Colette

   OriginalPaper Pages: 369 - 386

6. Minor planet short periodic perturbations: The indirect part of the disturbing function

   • Zoran Knežević

   OriginalPaper Pages: 387 - 404

7. A numerical method for differential equations of second order

   • Douxing Cui
   • Tian-Yi Huang

   OriginalPaper Pages: 405 - 409

8. Book review

   • J. P. Barriot
   • Algis B. Kucinskas

   BookReview Pages: 411 - 412

9. Erratum

   Erratum Pages: 415 - 415