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)
J. Unbehauen, S. Hellmann, S. Auer, and C. Stadler. Search Computing - Broadening Web Search, volume 7538 of Lecture Notes in Computer Science, Springer, (2012)
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)
C. Chiarcos, S. Nordhoff, and S. Hellmann (Eds.) Springer, Heidelberg, (2012)companion volume of the Workshop on Linked Data in Linguistics 2012 (LDL-2012), held in conjunction with the 34th Annual Meeting of the German Linguistic Society (DGfS), March 2012, Frankfurt/M., Germany.
S. Hellmann, J. Lehmann, and S. Auer. EKAW 2012, Springer, (2012)published at EKAW, preprint: http://svn.aksw.org/papers/2012/NIF/EKAW_short_paper/public.pdf.
G. Rizzo, R. Troncy, S. Hellmann, and M. Brümmer. LDOW, 5th Workshop on Linked Data on the Web, April 16, 2012, Lyon, France, Lyon, FRANCE, (April 2012)
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.
A. Klebeck, S. Hellmann, C. Ehrlich, and S. Auer. The Semanic Web: Research and Applications, volume 6644 of Lecture Notes in Computer Science, Springer Berlin / Heidelberg, (2011)
P. Heim, S. Hellmann, J. Lehmann, S. Lohmann, and T. Stegemann. Proceedings of the 3rd International Conference on Semantic and Media Technologies (SAMT), volume 5887 of Lecture Notes in Computer Science, page 182--187. Springer, (2009)
S. Auer, and S. Hellmann. Proceedings of the Eight International Conference on Language Resources and Evaluation (LREC'12), Istanbul, Turkey, European Language Resources Association (ELRA), (May 2012)(companion publication for the Keynote at LREC 2012).
C. Stadler, M. Martin, J. Lehmann, and S. Hellmann. 6th Workshop on Scripting and Development for the Semantic Web Colocated with ESWC 2010 30th or 31st May, 2010 Crete, Greece, (2010)