Discover Shadow Groups from the Dark Web. - Daniel Hladky; Christian Ehrlich; Irina Efimenko; Vyacheslav Vorobyov (Web Intelligence and Security - Advances in Data and Text Mining Techniques for Detecting and Preventing Terrorist Activities on the Web, 2010)

OntosFeeder - A Versatile Semantic Context Provider for Web Content Authoring. - Alex Klebeck; Sebastian Hellmann; Christian Ehrlich; Sören Auer (ESWC (2), 2011)