Permission to use, copy or reproduce parts of the ISMD-DB is granted provided that ISMD v2.1 is properly referenced as:

Marco Massa, Ezio D’Alema, Sara Lovati, Simona Carannante, Gianlorenzo Franceschina, Paolo Augliera (2016).
INGV Strong Motion Data (ISMD) v2.1, Istituto Nazionale di Geofisica e Vulcanologia (INGV).
https://doi.org/10.13127/ismd.2.1