On the dynamics of the 13 May 1995, M=6.6 Kozani-Grevena aftershock sequence - Makropoulos, K.; Kassaras, I.; A. Tzanis; Ziazia, M.; Louis, J; D, Diagourtas; T. Barakou; E. Koutsikos; Hatzfeld, D.; Selvaggi, G.; Bernard, P. (XXV ESC General Assembly, 1996)