1. S. Björck and T. L. Rasmussen, Geological Institute, University of Copenhagen, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark.
2. B. Kromer, Heidelberg Academy of Sciences, Im Neuenheimer Feld 366, D-69120 Heidelberg, Germany.
3. S. Johnsen, Department of Geophysics, Niels Bohr Institute, Rockefeller Komplekset, Juliane Maries Vej 30, DK-2100 Copenhagen O, Denmark, and Science Institute, Dunhage 3, Is-107, Reykjavik, Iceland.
4. O. Bennike, GEUS, Thoravej 8, DK-2400 Copenhagen, Denmark.
5. D. Hammarlund, G. Lemdahl, B. Wohlfarth, Department of Quaternary Geology, Lund University, Tornavägen 13, S-22363 Lund, Sweden.
6. G. Possnert, Tandem Laboratory, Uppsala University, Box 533, S-75121 Uppsala, Sweden.
7. C. U. Hammer, Department of Geophysics, Niels Bohr Institute, Rockefeller Komplekset, Juliane Maries Vej 30, DK-2100 Copenhagen O, Denmark.
8. M. Spurk, Institut für Botanik, Universität Hohenheim, Garbenstrasse 30, D-70593 Stuttgart, Germany.