1. Editorial

   • G. Kiers

   EditorialNotes Pages: v - v

2. A long duration balloon-borne telescope for solar gamma-ray astronomy

   • Alan Owens
   • Edward L. Chupp
   • Philip P. Dunphy

   OriginalPaper Pages: 1 - 19

3. Measuring the chemical composition of cosmic rays at ∼ 10¹³–10¹⁵ eV by utilizing the solar and geomagnetic fields

   • J. Heintze
   • P. Lennert
   • B. Povh

   OriginalPaper Pages: 21 - 34

4. Radioactivity induced background noise in space-borne astronomical gamma-ray telescopes employing inorganic scintillation spectrometers

   • A. J. Dean
   • Lei Fan
   • C. J. Hall

   OriginalPaper Pages: 35 - 45

5. Backprojection mechanisms in phase-closure imaging. Bispectral analysis of the phase-restoration process

   • A. Lannes

   OriginalPaper Pages: 47 - 76