1. On a generalized thermo-elastic problem in an infinite cylinder under initial stress

   • A. M. Elnagar
   • A. M. Abd-Allah

   OriginalPaper Pages: 213 - 223

2. Possible mass distributions in the nebulae of other solar systems

   • Wilbur K. Brown

   OriginalPaper Pages: 225 - 239

3. Cosmic-ray volleys from the galactic center and their recent impact on the earth environment

   • Paul A. Laviolette

   OriginalPaper Pages: 241 - 286

4. A new view of martian evolution

   • Siegfried Franck
   • Ingo Orgzall

   OriginalPaper Pages: 287 - 313