@inProceedings{critis:08, author = {Pierluigi Assogna and Glauco Bertocchi and Antonio Di Carlo and Franco Milicchio and Alberto Paoluzzi and Giorgio Scorzelli and Michele Vicentino and Roberto Zollo}, title = {Critical infrastructures as complex systems: a multi-level protection architecture}, booktitle = {CRITIS'08: 3rd Int. Workshop on Critical Information Infrastructures Security}, year = 2008, address = {Frascati (Rome), Italy}, month = {October 13-15}, }