Advance Interoperability in e-Government with Standardized Core Directories. - Christian Welzel; Heiko Hartenstein; Jörn von Lucke (AMCIS, 2009)

IT trends with impact on privacy and security. - Petra Hoepner; Maximilian Schmidt; Christian Welzel (Open Identity Summit, 2014)

Blockchain - Attack on and Chance for the Public Sector. - Christian Welzel (ERCIM News, 2017)