Stelios Lelis Petros Kavassalis Jakka Sairamesh Seif Haridi Fredrik Holmgren Mahmoud Rafea Antonis Hatzistamatiou Regularities in the Formation and Evolution of Information Cities. 41-55 2001 conf/digitalCities/2001 Digital Cities http://dx.doi.org/10.1007/3-540-45636-8_4 db/conf/digitalCities/digitalCities2001.html#LelisKSHHRH01