Proceedings of EWC'98, hand-out at Internat. IDNDR-Conf. on Early Warning Systems for the Reduction of Nat. Disasters, GeoForschungsZentrum Potsdam, organized by the Local Organising Committee of the Secretariat of the International Decade for the Natural Disaster Reduction (IDNDR), vol. C 560, 183 pp., no. PL-TR-91-2130, pp. 303-307, (ISBN 3-933346-037)