1. On a Three-term Variant of the Lomb Periodogram

   • Richard I. Shrager

   OriginalPaper Pages: 519 - 530

2. P – ω Dynamo in Spherical Geometry

   • Jing Hairong
   • Tong Yi
   • Yang Zhiliang

   OriginalPaper Pages: 531 - 543

3. Helium contamination from the progenitor stars of planetary nebulae: The He/H radial gradient and the ΔY / ΔZ enrichment ratio

   • W.J. Maciel

   OriginalPaper Pages: 545 - 563

4. Lithium Abundances in 11 Solar-type Stars

   • H.M. Qiu
   • G. Zhao
   • Z.W. Li

   OriginalPaper Pages: 565 - 577

5. Multiple Periodic Orbits in the Ring Problem: Families of Triple Periodic Orbits

   • Telemachus J. Kalvouridis

   OriginalPaper Pages: 579 - 614

6. Solar Radio Bursts on 16 February 1999

   • Zongjun Ning
   • Qijun Fu
   • Quankang Lu

   OriginalPaper Pages: 615 - 624

7. A Bacterial ‘Fingerprint’ in a Leonid Meteor Train

   • N.C. Wickramasinghe
   • F. Hoyle

   OriginalPaper Pages: 625 - 628

8. Instructions for Authors

   Instructions for Authors Pages: 629 - 635

9. Volume Contents

   Volume Contents Pages: 637 - 641