Secure PKI-enabled e-government infrastructures implementation: the SYZEFXIS-PKI case. - Dionysis Kefallinos; Maria A. Lambrou; Efstathios D. Sykas (Electron. Gov. an Int. J., 2006)

An Extended Risk Assessment Model for Secure E-Government Projects. - Dionysis Kefallinos; Maria A. Lambrou; Efstathios D. Sykas (Int. J. Electron. Gov. Res., 2009)

'A public key infrastructure model for privacy-enhancing general purpose eIDs'. - Dionysis Kefallinos; Efstathios D. Sykas (IET Inf. Secur., 2015)