Solar Photo Rates for Planetary Atmospheres and Atmospheric Pollutants 1992 · ENGLISH · PDF View details →
Comets in the Post-Halley Era: In Part Based on Reviews Presented at the 121st Colloquium of the International Astronomical Union, Held in Bamberg, Germany, April 24–28, 1989 1991 · ENGLISH · PDF View details →
The Dynamic Sun: Proceedings of the Summerschool and Workshop held at the Solar Observatory, Kanzelhöhe, Kärnten, Austria, August 30-September 10, 1999 2001 · ENGLISH · PDF View details →
Secular Solar and Geomagnetic Variations in the Last 10,000 Years 1988 · ENGLISH · PDF View details →