ADDITIONAL REFERENCES:

• Pondrelli, S., Morelli, A., Ekström, G., 2004. European-Mediterranean regional centroid-moment tensor catalog: solutions for years 2001 and 2002. Phys. Earth Plan. Int., 145, 1-4, 127-147.
• Pondrelli, S., C. Piromallo, and E. Serpelloni, 2004, Convergence vs. retreat in Southern Tyrrhenian Sea: Insights from kinematics, Geophys. Res. Lett., 31, L06611, doi:10.1029/ 2003GL019223. 
• Cucci, L., Pondrelli, S., Frepoli, A., Mariucci, M. T., Moro, M., 2004. Local pattern of stress field and seismogenic sources in the Pergola-Melandro basin and the Agri valley (Southern Italy). Geophys. J. Int., 156 (3), 575-583. doi: 10.1111/j.1365-246X.2004.02161.x
  
• Pondrelli, S., A. Morelli, G. Ekström, S. Mazza, E. Boschi, and A. M. Dziewonski, 2002, European- Mediterranean regional centroid-moment tensors: 1997-2000, Phys. Earth Planet. Int., 130, 71-101, 2002
• Pondrelli, S., G. Ekström, and A. Morelli, 2001, Seismotectonic re-evaluation of the 1976 Friuli, Italy, seismic sequence, J. Seismol., 5, 73-83.
• Morelli, A., Ekström, and M. Olivieri, 2000, Source properties of the 1997-1998 Central Italy earthquake sequence from inversion of long period and broadband seismograms, J. Seismol., 4, 365-375.
• see also the electronic paper: A. Morelli, G. Ekström, S. Mazza, S. Pondrelli, E. Boschi, A. M. Dziewonski, 2000, Surface-wave Centroid Moment Tensors in the Mediterranean region: the MEDNET-Harvard project, ORFEUS Electronic Newsletter, Vol.2, No. 1, page 4 (http://orfeus.knmi.nl/newsletter/vol2no1/index.html)
• Pondrelli, S., Ekström, G., Morelli, A., Primerano, S., 1999. Study of source geometry for tsunamigenic events of the Euro-Mediterranean area.
  In International Conference on Tsunamis, 297-307, UNESCO books, Paris, 1999.
  
• Ekström, G., A. Morelli, E. Boschi, and A. M. Dziewonski, 1998, Moment tensor analysis of the central Italy earthquake sequence of September-October 1997, Geophys. Res. Let., 25, 1971-1974.

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