D. Kontokostas, P. Westphal, S. Auer, S. Hellmann, J. Lehmann, and R. Cornelissen. Proceedings of the Companion Publication of the 23rd International Conference on World Wide Web Companion, page 115--118. International World Wide Web Conferences Steering Committee, (2014)
G. Kobilarov, C. Bizer, S. Auer, and J. Lehmann. Proceedings of Developers Track of 18th International World Wide Web Conference (WWW 2009), April 20th-24th, Madrid, Spain, (April 2009)
S. Hellmann, C. Stadler, J. Lehmann, and S. Auer. Proc. of 8th International Conference on Ontologies, DataBases, and Applications of Semantics (ODBASE), volume 5871 of Lecture Notes in Computer Science, page 1209--1223. (2009)
S. Hellmann, J. Lehmann, S. Auer, and M. Nitzschke. EKAW, page 446--449. (2012)published at EKAW, preprint http://jens-lehmann.org/files/2012/ekaw\_nif\_combinator.pdf.
S. Hellmann, J. Lehmann, and S. Auer. Learning of OWL Class Expressions on Very Large Knowledge Bases and its Applications, chapter 5, IGI Global, (2011)
S. Hellmann, J. Lehmann, and S. Auer. Proceedings of the Poster and Demonstration Session at the 7th International Semantic Web Conference (ISWC2008), Karlsruhe, Germany, October 28, 2008, volume 401 of CEUR Workshop Proceedings, CEUR-WS.org, (2008)