1. A test of escape valid even for very small mutual distances I. The acceleration and the escape velocities of the third body

   • Christian Marchal
   • Junzo Yoshida
   • Sun Yi-Sui

   OriginalPaper Pages: 193 - 207

2. Periodic orbits in a resonant dynamical system

   • N. Caranicolas

   OriginalPaper Pages: 209 - 215

3. Orbites periodiques dans un potentiel a trois dimensions II. Bifurcations

   • P. Cartigny
   • N. Desolneux
   • A. Hayli

   OriginalPaper Pages: 217 - 227

4. Further investigation into a recent model for toroidal rings of Saturn

   • John V. Breakwell
   • R. von Eshleman

   OriginalPaper Pages: 229 - 238

5. About an unsuspected integrable problem

   • F. Mignard
   • M. Henon

   OriginalPaper Pages: 239 - 250

6. Two notes on the copenhagen problem

   • J. M. A. Danby

   OriginalPaper Pages: 251 - 260

7. The evolution of periodic orbits close to heteroclinic points

   • J. M. A. Danby

   OriginalPaper Pages: 261 - 270

8. Equilibrium solutions of the restricted problem of 2+2 bodies

   • Arthur L. Whipple

   OriginalPaper Pages: 271 - 294

9. Sun and planetary system

   • Paul Nacozy

   Book Review Pages: 295 - 295

10. Editorial announcement

    • R. L. Dùncombe

    EditorialNotes Pages: 296 - 296

11. Publisher's note

    Announcement Pages: 296 - 296

12. Reduction, Brouwer's Hamiltonian, and the critical inclination

    • Richard Cushman

    Errata Pages: 297 - 297