Cryptanalytic Time-Memory Tradeoffs on COPACOBANA. - Tim Güneysu; Andy Rupp; Stefan Spitz (GI Jahrestagung (2), 2007)

Dynamic Threshold Cryptosystem without Group Manager. - Andreas Noack 002; Stefan Spitz (Netw. Protoc. Algorithms, 2009)

A Survey of Security Issues in Trust and Reputation Systems for E-Commerce. - Stefan Spitz; York Tüchelmann (ATC, 2011)

A secure trust and reputation system - Stefan Spitz (2012)