The CRITIS'09 Workshop is the 4th in its history.
The former ones were held in the following locations:

• CRITIS'08, Frascati, Italy
  http://critis08.dia.uniroma3.it/
• CRITIS'07, Benalmadena-Costa, Spain
  http://critis08.dia.uniroma3.it/archive/2007/index.html
• CRITIS'06, Samos Island, Greece
  http://critis08.dia.uniroma3.it/archive/2006/index.html