1. Note on the summation of Legendre series

   • André Deprit

   OriginalPaper Pages: 319 - 323

2. Note on Lagrange's inversion formula

   • André Deprit

   OriginalPaper Pages: 325 - 327

3. Astronomical measurements and coordinate conditions in relativistic celestial mechanics

   • V. A. Brumberg

   OriginalPaper Pages: 329 - 342

4. Algebraic aspects of perturbation theories

   • F. Spirig

   OriginalPaper Pages: 343 - 354

5. Etude d'une solution de la theorie litterale du probleme principal du mouvement de la Lune convergence formelle

   • Annick Bec-Borsenberger

   OriginalPaper Pages: 355 - 387

6. The ‘Halo’ family of 3-dimensional periodic orbits in the Earth-Moon restricted 3-body problem

   • John V. Breakwell
   • John V. Brown

   OriginalPaper Pages: 389 - 404

7. The trajectories of a spaceprobe ejected from a space station in circular orbit

   • T. F. Berreen

   OriginalPaper Pages: 405 - 431