1. Institute of Geophysics, Department of Earth Sciences, ETH Zürich, Zürich, Switzerland
2. Department of Geophysics, Faculty of Science, University of Zagreb, Zagreb, Croatia
3. Republic Hydrometeorological Service of Republic of Srpska, Banja Luka, Bosnia and Herzegovina
4. Swiss Seismological Service, ETH Zürich, Zürich, Switzerland
5. Istituto Nazionale di Geofisica e Vulcanologia, Bologna, Italy