The contents of this guide benefited from fruitful discussions and exchanges with Beltrando M., Ciancaleoni L., Compagnoni R., Ferrandini J., Ferrandini M., Guyedan F., Maggi M., Ottaviani-Spella M., Rossetti F.

We would like to acknowledge the University of Corte, CNRS and University of Montpellier, the University of Pisa and INGV-Pisa for their support. Sociéte Géologique France and Società Geologica Italiana are also acknowledged. GM wants to thank all the technical and administrative staff of the Pisa Earth Science Dept. for their support as well as Alberto Puccinelli for fruitful discussion and suggestions. Marco Beltrando is thanked for his revision and editorial handling.