GroupMe! - Where Semantic Web meets Web 2.0 . - Fabian Abel; Mischa Frank; Nicola Henze; Daniel Krause 002; Daniel Plappert; Patrick Siehndel (Semantic Web Challenge, 2007)

User Modeling and User Profile Exchange for SemanticWeb Applications. - Fabian Abel; Nicola Henze; Daniel Krause 002; Daniel Plappert (LWA, 2008)