Earthquake Catalogue for the EU (as of 1990), Austria, and Switzerland. Source: VAN GILS,J.M. & G.LEYDECKER (eds.) (1991): Catalogue of European earthquakes with intensities higher than 4. -- Commission of the European Communities - nuclear science and technology. 353 pp., 14 fig., 1 tab.- ISBN 92-826-2506-0, Catalogue number: CD-NA-13406-EN-C. Brussels - Luxembourg.

Source: BGR